In order to speak with precision about *time terms* (1 + 3) I’ve had to invent many new terms. I’ve tried to make them parallel to the corresponding *space terms* (3 + 1) terms and to follow scientific practice of using Greek and Latin roots. These new terms are placed parallel to their corresponding terms in two pdf’s, ** Parallel Glossary for Classical Physics** and

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**Parallel Glossary for Relativity Physics**The terms below are presented in this format: term in bold, definition, units, etymology, and in some cases a suggested symbol. Other terms in this glossary are in italics.

**acceleration **is the change in the *displacement* per unit of duration; verb is *accelerate* with negative *decelerate*; no acceleration is *unaccelerated*; units of m/s²; symbol **a**; instantaneous (timepoint) acceleration is d**v**/d*t* = d**v**/|d**t**|.

**acceleration **is the change in the *displacement* per unit of duration; verb is *accelerate* with negative *decelerate*; no acceleration is *unaccelerated*; units of m/s²; symbol **a**; instantaneous acceleration is d**v**/d*t* = d**v**/|d**t**|.

**angle** (*θ* or *ϕ*) is a proportion of a circle between two rays intersecting in a place point.

**angle direction** is the angle from a reference ray.

**angular fulmentum **for a particle time point is the fulment of fulmentum, **Γ** ≡ **t** × **q**, the cross product of the particle’s* chronation *vector, **t**, and its* fulmentum *vector, **q** = n**u**.

**angular momentum **for a particle place point is the moment of momentum, **L** ≡ **r** × **p**, the cross product of the particle’s location vector, **r**, and its momentum vector, **p** = m**v**.

**body** is a physical entity with spatial and temporal extent and position.

**carrier **(wave) is a body with *elaphrance* that fills a *trime*; a measure of the lethargy content of a body.

**center of elaphrance **(or *elaphrocenter*) is the normalized fulment of elaphrance; **T** = (1/*N*) Σ_{i} **t**_{i} *n*_{i}.

**center of mass **(or *bathycenter*) is the normalized moment of mass; **R** = (1/*M*) Σ_{i} **r**_{i} *m*_{i}.

**chronation** of a time point is the trime vector to it from the time origin; symbol **t**.

**circular motion: **space circle S = wavelength *λ* = *v*/*f*; circular arc *s*; space radius R; (spatial) angle *θ* = *s*/R; frequency *f* = 1/T = *v*/*λ*; angular velocity *v* = S/T = *λf*; if S = 1, then *v* = *f*; if R = 1, then *v* = *ω* = 2π*f* = *θ*/*t*.

**co-located** events occur at the same place; n. *co-location*.

**cyclic motion: **time period T = wave duration *μ* = *u*/*h*; rotation time *t*; time radius Q; turn angle *ϕ* =* t*/Q; periodicity* h *= 1/S =* u*/*μ*; angular lenticity* u *= T/S =* μh*; if T = 1, then* u *=* h*; if Q = 1, then* u *=* κ *= 2π*h *=* θ*/*s*.

**dischronment** is a *trime* vector; or the distime and turn direction between two trime points.

**displacement** is a space vector; the distance and angle direction between two place points.

**distance **is (1) the length of standard uniform motion between two place points; (2) the magnitude of a displacement vector.

**distime** (time) is (1) the duration of standard uniform motion between two time points; (2) the magnitude of a dischronment vector; symbol *t*.

**drawing **is a *release*** G **applied over a length d*s* or change in *fulmentum*; units O·m; symbol **K** ≡ **R**·d*s* = d**q**.

**duration **is the extent of a body’s motion as measured by an observer at rest.

**duration scale **is a ratio of map distime interval vs. actual distime interval.

**elaphra** is the* release *exerted on a body by* levity*.

**elaphrance **is the nonresistance of a body to a change in its condition of movement as a net *release* is applied; inverse of mass; from *elaphr* + *ance*; units of kg^{–1}; symbol *n*.

**energy **is the capacity for doing work; units, J ≡ N·m = W·s; symbol *E*.

**event **is a physical occurrence with location and chronation.

**facilia **(linear) is the nonresistance of a body to a change in its state of movement; Latin for *easy*.

**facilial system** has bodies at rest or moving with uniform lenticity.

**force **is the time rate of change of *momentum*; units in newtons, N = kg m s^{–2}; symbol **F** ≡ d**p**/d*t*, e.g., *m***a**.

**frame of reference** is an imaginary lattice of rigid rods at rest relative to an observer that enables every place point of space to be uniquely identified.

**fulment **is the product of a physical quantity such as *elaphrance* or *release* and its distime from/to a time point.

**fulment of facilia** is the second fulment of elaphrance; *J* ≡ Σ_{i} *t*_{i}^{2} *n*_{i}.

**fulmentum **(ful∙men′∙tum) is the *elaphrance* times the *lenticity*; the space rate of change of the elaphrance-distime fulment; Latin, prop; units of kg^{‒1} s m^{‒1}; symbol **q** = *n***u**.

**gravitation **is the mutual force that all bodies have, which is directed toward the mutual center of mass.

**horologe** (clock) is a device that displays the present point on a timeline.

**impulse **is a force** F **applied over a duration d*t*, or the change in momentum; units N·s; symbol **J** ≡ **F**·d*t* = d**p**.

**inertia **(linear) is the resistance of a body to any change in its state of motion.

**inertial system** has bodies at rest or moving with uniform velocity.

**instantaneous** (timepoine) events occur in a time point.

**isochron** line shows *equidistimed* events.

**isodistance **line shows *equidistant* events.

**kinematics **is the set of ordered pairs of spatial and temporal position, called *location* and *chronation*, respectively.

**kinetic energy** KE = ½ *m***v**².

**kinetic lethargy** KL = ½ *n***u**².

**length **is the extent of a body at rest as measured by an observer in uniform motion.

**length scale **is a ratio of map distance vs. actual distance.

**lenticity** see space lenticity and time lenticity.

**lethargy **is the capacity for repose; units, 1/J ≡ O·s; symbol *D* = 1/*E*.

**levitation **is the mutual *release* that all bodies have, which is directed toward the mutual center of *elaphrance*.

**location** of a place point is the space vector to it from the space origin; symbol **s**.

**mass **is the resistance of a body to a change in its condition of motion as a net force is applied; inverse of* elaphrance*; units of kg; symbol* m*.

**matter **(particle) is a body with *mass* that occupies a space; a measure of the energy content of a body.

**metre **is the SI unit of length, distance, or space.

**metreloge** is a device that displays the present point on a placeline.

**moment **is the product of a physical quantity such as mass or force and its distance from/to a place point/axis.

**moment of inertia** is the second moment of mass; *I* ≡ Σ_{i} *r*_{i}^{2} *m*_{i}.

**momentum **(linear) is the *mass* times the *velocity*; the time rate of change of the mass-distance moment; Latin, movement; units in kg m s^{‒1}; symbol **p** = *m***v**.

**motion of a body** is a continuous change of its position relative to an observer.

**observer** is a body capable of measurement.

**pace**, see space pace and time pace.

**periods** (of time) are timeline intervals.

**place point** (or placepoint) is a point in space.

**placeline **is a sequence of place points marked on a frame at rest by a body in relative uniform motion; symbol *s*.

**placepoint** events occur in a place point.

**placidity **is the ratio of repose per unit of length: *Z* ≡ d*V*/d*s* = **R**·**u**; units: 1/J·m = O·s/m.

**power **is the ratio of work per unit of duration: *P* ≡ d*W*/d*t *= **F** ·**v**; units: Watt, W = J/s = N·m/s.

**release **is the space rate of change of *fulmentum*; units in* oldtons*, O = kg^{−1} s m^{−2}; symbol **R** ≡ d**q**/d*s*, e,g.,* n***b**.

**repose **(inverse of work) is a release** R **applied over a* dischronment ***t**:* X *≡ **R**·**t**; for a constant* release*:* Y = R *d*t *=* Z *d*s*; units O·s.

**retardation **is the change in the *dischronment* per unit of length; verb is *retard* with negative* de-retard *(or expedite); no retardation is* unretarded*; units s/m²; symbol **b**; *placepoint* retardation d**u**/d*s* = d**u**/|d**s**|.

**second **is the SI unit of duration, distime.

**simultaneous** (co-chronated) events occur at the same time; noun *simultaneity*.

**space** is the structure of places in **R**^{3}.

**space lenticity (lenticity) **(len·tis′·i·ty) of a body in motion is the ratio of its* dischronment *to the change in place; symbol **u**; *placepoint* *lenticity* is d**t**/d*s* = d**t**/|d**s**|. From Latin *lentus*, slow, sluggish.

**space mean pace **is the arithmetic mean of paces with a common length unit.

**space mean speed** is the harmonic mean of speeds with a common length unit.

**space origin** is a reference place point in space.

**space pace** (pace) of a body in motion is its duration of motion per unit of length without regard to direction; symbol *u*; from racing; units of s/m, min/km, etc.; placepoint pace is d*t*/d*s*, which equals the magnitude of *placepoint lenticity*.

**space speed** of a body in motion is the inverse of its *space pace*.

**space velocity** of a body in motion is the inverse of its *space lenticity*.

**spaces** (spans) are placeline intervals.

**speed**, see space speed and time speed.

**strophence **is the fulment of release; the rate of change of angular *fulmentum* of a body, **σ** *=* I**β**; from Greek *strophe*, turn + (e)*nce.*

**synchronous**, has the same time points; verb *synchronize*, make synchronous.

**synlocal**, has the same place points; vb. *synlocalize*, make synlocal.

**time lenticity** of a body in motion is the inverse of its *time velocity*.

**time mean pace** is the harmonic mean of paces with a common time unit.

**time mean speed **is the arithmetic mean of speeds with a common time unit.

**time origin** is a reference time point in trime.

**time pace** of a body in motion is the inverse of its *time speed*.

**time point** (or timepoint) is a point in trime.

**time speed** (speed) of a body in motion is its length of motion per unit of duration without regard to direction; symbol *v*; units of m/s, km/hr, etc.; instantaneous speed is d*s*/d*t*, which equals the magnitude of instantaneous velocity.

**time velocity (velocity) **(vel∙o′∙ci∙ty) of a body in motion is the ratio of its* displacement *to the change in time; symbol **v**; instantaneous velocity is d**s**/d*t* = d**s**/|d**t**|. From Latin *velocitas*, swiftness, rapidity.

**timeframe of reference** is an imaginary lattice of rigid rods in uniform motion relative to an observer that enables every time point of *trime* to be uniquely identified.

**timeline **is a sequence of time points marked on a frame in motion by a body at relative rest; symbol *t*.

**torque **is the moment of force; the rate of change of angular momentum of a body, **τ** *=* I**α**; units: N·m.

**travel distance **(arc length) is the length along a curve.

**travel time **(arc duration) is the duration along a curve.

**trime** (3D time) is the structure of times in** R**^{3}.

**turn angle **(*χ* or *ψ*) is a proportion of a uniform revolution between two rays intersecting in a time point.

**turn direction **is the turn angle from a reference ray.

**velocity** see time velocity and space velocity.

**weight** is the force exerted on a body by gravity.

**work **is a force** F **applied over a displacement** s**: *W* ≡** F**·** s**; for a constant force: *W = F* d*s* = *P* d*t*; units: J = N·m.