# equ-, equi-

#### (Latin: same, similar, even, uniform, identical; fair)

Don't confuse this unit with another equ- unit meaning horse.

equatorial mount
A sun-tracking mount, usually clock-driven, whose axis of rotation is parallel to that of the earth.
equianalgesic
A dose of one form of analgesic drug equivalent to another analgesic in pain-relieving potential.

Knowing this equivalence permits the substitution of analgesics without undesired side effects.

equiangular (ek-wih-ANG-you-luhr) (not comparable)
Having four sides or walls of the same size coming together: A square is an equiangular form because each of its interior angles are ninety degrees and so they are equal in size.
equicaloric, isocaloric
Having the same caloric value.
equidistant (not comparable)
1. Referring to a place situated at the same distance from two or more other places or points: Jane's house was equidistant from the school where she taught and the city center.
2. Pertaining to the representation of map distances true to scale in all directions: When Jack and Jill were preparing for their trip to Canada, they saw in the atlas that Montreal was quite equidistant from Toronto, where their cousin lived, Boston, where their aunt lived, and New York, where their most distant relatives lived.
equidistantly
In an equidistant manner or to an equidistant degree.
equilateral
1. Having all sides or faces equal.
2. A geometric figure in which all the sides are of equal length.
equilaterally
1. Referring to a figure having all its sides equal.
2. Descriptive of a side equivalent, or equal, to others.
equilibrant
1. A force that is able to balance out another force and produce an equilibrium.
2. A counterbalancing force or system of forces.
equilibrate
1. To balance equally; to keep in equipoise or equilibrium.
2. To be in equilibrium with; to counterpoise.
equilibrator
An apparatus for producing a state of balance between forces.
equilibrium
1. A sensory system located in structures of the inner ear that registers the orientation of the head.
2. A stable situation in which forces cancel one another.
3. A mental state of calmness and composure.
4. A state or situation in which opposing forces or factors balance each other out and stability is attained.
5. In physics, a balanced state in a system; such as, a condition in which the energy gained by a system from its surroundings is exactly in balance with the energy that it loses, irrespective of the passage of time.
6. A state in which a chemical is proceeding equally rapidly in the forward and the reverse directions.
equinimity
1. Evenness of mind; especially, under stress.
2. Having the right disposition or balance.
equinoctial
1. A reference to a state of equal day and night.
2. The period or point of the equinox.
3. The celestial equator: so called because, when the sun is on it, the nights and days are of equal length in all parts of the world.
equinoctially
Towards the equinox.

Inter-related cross references, directly or indirectly, involving word units dealing with "equal, identical, same, similar": auto-; emul-; homeo-; homo-; iso-; pari-; peer; rhomb-; syn-; tauto-.