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

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**Parallel Glossary for Relativity Physics**Note that the term *time* has multiple meanings: duration, distime, distimement, 3D time, scalar time. These correspond to the meanings of *space*: length, distance, displacement, 3D space.

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.

**3D space** is the largest place.

**3D time** is the largest period.

**acceleration** is the time radius rate of change of *velocity*. Verb *accelerate* with negative *decelerate*. Units of m/s². Symbol **a**.

**angular fulmentum** for a transicle is the cross product of the particle’s time position vector, **w** (relative to an origin), and its *fulmentum* vector, **q** = n**u**.

**angular momentum** for a point particle is the cross product of the particle’s position vector, **r** (relative to an origin), and its momentum vector, **p** = m**v**.

**center of mass** is the mean point in 3D space of the particles of an object, weighted by their masses.

**center of vass** is the mean instant in 3D time of the *transicles* of a subject, weighted by their vasses.

**displacement** (dis∙place′∙ment) is the vector of the distance and direction between two points in 3D space. Symbol **r**.

**distance **is the length between two places in a medium.

**distime **is the duration between two periods in a mode.

**distimement** (dis∙time′∙ment) is the vector of the distime and direction between two instants in 3D time. From *dis+time+ment*. Symbol **w**.

**duration** is what is measured by a synchronous stopwatch, or by the difference between two readings on a clock. Units of seconds, hours, etc. Symbol *t*.

**elaphra** is the *rush* exerted on a subject by *levity*.

**energy** is the capacity for doing work. Units, J = N·m = W·s. Symbol *E*.

**exertion** is the space radius rate of doing *invork*: *Q* = d*V*/d*s* = **Γ**·**u**. Units: 1/J·m = O·s/m.

**expedience **is the space radius rate of change of *legerity*. Verb *expedite* with negative *de-expedite*. Units of s/m². Symbol **b**.

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

**figure** is a substance with *vass* that occupies 3D time.

**force** is the time radius rate of change of *momentum***.** Units in newtons, N = kg m s^{‑2}. Symbol **F** = *m***a** = Δ**p**/Δ*t*.

**fulment** is the product of a physical quantity such as *rush* times its *distime* from an instant or line in 3D time

**fulmentum** (ful∙men′∙tum) is the *legerity* weighted by (times) the *vass*. Latin, prop, support. 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 body with greater mass.

**impetus** is a *rush* **Γ** applied over a length Δ*s*, or change in *fulmentum*. Units O·m. Symbol **K = Γ**·Δ*s* = Δ**q**.

**impulse** is a force **F** applied over a time Δ*t*, or the change in momentum. Units N·s. Symbol **J** = **F**·Δ*t* = Δ**p**.

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

**instant** is the smallest period.

**instantaneous** means happening in an instant of time.

**invergy** is the capacity for doing *invork*. Units, 1/J = O·s. Symbol *Y*.

**invork** (1/work) is a *rush* **Γ** applied over a *distimement* **w**: *V* = **Γ**·**w**. Constant *rush*: *V = Γ* Δ*t* = *Q* Δ*s*. Units O·s.

**legerity** (le·jer′·i·ty) is the space radius rate of change of *distimement*; the pace and direction vector. Symbol **u**. Mean legerity is Δ**w**/Δ*s*. Punctaneous legerity is d**w**/d*s* = d**w**/|d**r**|. From Middle French *legereté*, quickness or lightness in movement.

**length** is what is measured by a parallel ruler, or by the difference between two readings on a odometer. Units in meters, kilometers, etc. Symbol *s*.

**levitation** is the mutual *rush* that all bodies have, which is directed toward the body with greater *vass*.

**mass** is the resistance of an object to a change in its state of motion when a net force is applied. Units of kg. Symbol *m*.

**matter** is a substance with mass that occupies 3D space.

**medium** of motion is the material in or on which motion occurs. A vehicle is a means of motion.

**mode** of movement (transport) is the medium and means in or on which movement occurs.

**moment** is the product of a physical quantity such as force times its distance from a point or line in 3D space.

**momentum** (linear) is the *velocity* weighted by (times) the *mass*. Latin. Units in kg m s^{‑1}. Symbol **p** = *m***v**.

**motion** (travel) of an object is its change of place while a reference clock runs.

**movement** (transport) of a subject is its change of period while a reference odometer runs.

**object body** (object) is a collection of related points or particles in 3D space with mass and motion from an origin along a time path (trajectory).

**pace** is the space radius rate of change of the time radius of a subject without regard to direction; or the magnitude of the *legerity*. Symbol *u*. From racing. Units of s/m, min/km, etc. Punctaneous pace is d*t*/d*s*.

**particle** (point mass) is (1) a very small object with motion and mass; (2) an idealized point object with 3D space position and mass.

**period **is a time in which subjects or events may occur.

**place** is a space in which objects or events may occur.

**point** is the smallest place.

**power** is the time radius rate of doing work: *P* = d*W*/d*t* = **F** · **v**. Units: Watt, W = J/s = N·m/s.

**punctaneous** means occurring in a point of space.

**reference frame** is a space-time coordinate system and set of reference points in space-time.

**reference timeframe** is a time-space coordinate system and set of reference points in time-space.

**rotational facilia **(fulment of facilia) is the second *fulment* of *vass* with respect to distimement **w** from an axis: *J* = ∫ **w**^{2} d*n*.

**rotational inertia **(moment of inertia) is the second moment of mass with respect to displacement **r** from an axis: *I* = ∫ **r**^{2} d*m*.

**space** is that which is measurable by lengths.

**space position **of a point is the *displacement* vector to it from a reference point.

**space radius **of a place is its distance from a reference point.

**space-time** is 3D space with events ordered by *time radius*.

**spatial angle** (or direction) is the proportion of a circle between two intersecting rays in 3D space.

**speed** is the time radius rate of change of the space radius of a body without regard to direction; or the magnitude of the velocity. Symbol *v*. Units of m/s, km/hr, etc. Instantaneous speed is d*s*/d*t*.

**station** is a place that begins, ends, or divides a motion.

**stop** is a period that begins, ends, or divides a movement.

**strophence **is the rate of change of angular *fulmentum* of a subject, *σ = *I*β*. From Greek *strophe*, turn + (e)*nce.*

**subject body **(subject) is a collection of related instants or transicles in 3D time with *vass* and movement toward a destination along a path (trajectory).

**rush** is the space radius rate of change of *fulmentum*. Units in *oldtons*, O = kg^{-1 }s m^{-2}. Symbol **Γ** = *n b* = Δ

**q**/Δ

*s*.

**symmacronous** motions occur with the same space radius; coordinated in space. From Greek *sym + macron + ize*.

**synchronous** motions occur with the same time radius; coordinated in time. From Greek *syn + chron + ize*.

**temporal angle** (or direction) is the proportion of a revolution between two intersecting rays in 3D time.

**time** is that which is measurable by durations.

**time position **of an instant is the *distimement* vector to it from a reference instant.

**time ****radius** of a period is its *distime* from a reference instant.

**time-space** is 3D time with events ordered by *space radius*.

**torque** is the rate of change of angular momentum of an object, *τ = *I*α*. Units: N·m.

**transicle** (point vass) is (1) a very small subject with movement and vass; (2) an idealized point subject with 3D time position and *vass*. From *transi*(t) + (parti)*cle*.

**traversal length **(arc length) is the length along the path of movement; equals the integral of 3D space positions.

**traversal time** (arc time**) **is the duration along the path of motion; equals the integral of 3D time positions.

**vass** is the nonresistance of a subject to a change in its condition of movement when a net *rush *is applied. Inverse of mass. From vast. Units of kg^{-1}. Symbol *n*.

**velocity** (vel∙o′∙ci∙ty) is the time radius rate of change of *displacement*; the speed and direction vector. Symbol **v**. Mean velocity is Δ**r**/Δ*t*. Instantaneous velocity is d**r**/d*t* = d**r**/|d**w**|.

**weight** is the force exerted on an object by gravity.

**work** is a force **F** applied over a displacement **r**: *W* = **F**· **r**. For a constant force: *W = F* Δ*s* = *P* Δ*t*. Units: J = N·m.