An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

1a) To bring in (merchandise, commodities, workers, etc.) from a foreign country for use, sale, processing, reexport, or services.
1b) Computers: To bring (documents, data, etc.) into one software program from another.
2) The act of importing or bringing; something that is imported (Dictionary.com).

From im-, variant of → in- + port, → export.

Of great significance or effect.

From M.Fr. important, from M.L. importantem, from importare "be significant in," from importare "bring in," → in- "into, in" + portare "to carry."

Garin, on the model of Kurd. giring "important," related to girân, gerân "heavy, important;" Mid.Pers. garân, Proto-Ir. stem *garu-; cf. Av. gouru-; Skt. guru- "heavy, important, venerable;" L. gravis "weighty, serious, heavy," → gravity.

1) To lay on or set as something to be borne, endured, obeyed, fulfilled, paid, etc.
2) To put or set by or as if by authority (Dictionary.com).

M.E., from O.Fr. imposer "put, place; impute, charge, accuse," from → in- "into, in" + poser "put, place," → position.

Barnehâdan, literally "to place on, upon," from bar-, → on-, + nehâdan "to put, place," → compose.

Very impressive because of great size, stately appearance, dignity, elegance, etc. (Dictionary.com).

→ impose; → -ing.

1) The laying on of something as a burden or obligation.
2) Something imposed, as a burden or duty; an unusual or extraordinarily burdensome requirement or task.
3) The act of imposing by or as if by authority (Dictionary.com).

→ impose; → -tion.

Not possible; unable to be, exist, happen. Unable to be done, performed, effected.

→ in-; → possible.

On who pretends to be what he is not.

M.Fr. imposteur, from L.L. impostor, agent noun from impostus, from imponere "to place upon, impose upon, deceive," from → in- "into, in, on, upon" + ponere "to put place," → position.

Daqalkâr, from daqal "imposture, deceit" + -kâr, agent noun suffix, from kardan, → -or.

Not precise; not exact; vague.

From im-, variant of → in- + → precise.

The quality of lacking → precision.

From im-, variant of → in- + → precision.

1) To press, to apply with pressure, especially to leave a mark.
2) To produce a profound effect upon the mind.

→ in-; → press.

1) A strong effect produced on the intellect, feelings, conscience, etc.
2) The first and immediate effect of an experience or perception upon the mind (dictionary.com).

→ press + -ion variant of → -tion.

Capable of being impressed; easily impressed.

→ impress; → -able.

1) A style of painting developed in the last third of the 19th century, characterized chiefly by short brush strokes of bright colors in immediate juxtaposition to represent the effect of light on objects.
2) A manner of painting in which the forms, colors, or tones of an object are lightly and rapidly indicated.
3) A manner of sculpture in which volumes are partially modeled and surfaces roughened to reflect light unevenly (Dictionary.com).

→ impression; → -ism.

Having the power to impress, to raise admiration, awe, respect, etc.

→ impress; → -ive.

Of a force acting on a body, the → product of the → force and the → time for which it acts. If the force changes with time, the impulse is the → integral of the force with respect to the time during which the force acts, and is equal to the total change of → momentum produced by the force: ∫F dt = ∫m dv. Impulse is a → vector quantity.

From L. impulsus "a push against, pressure, shock," p.p. of impellere "to push, strike against, drive forward," from → in- "into" + pellere "to push, drive."

Tekâné, from tekân "involuntary motion, sudden shaking," related to tak "rush, quick motion, stroke, blow" (tâxtan, tâzidan "to run; to hasten; to assault"); Mid.Pers. tak "assault, attack;" Av. taka- "leap, run," from tak- "to run, flow;" cf. Skt. tak- "to rush, to hurry," takti "runs;" O.Ir. tech- "to flow;" Lith. teketi "to walk, to flow;" O.C.S. tešti "to walk, to hurry;" Tokharian B cake "river;" PIE base *tek^w- "to run; to flow;" → flow.

The vector → impulse of the → resultant force on a particle, in any time interval, is equal in magnitude and duration to the vector change in momentum of the particle: ∫F dt = mv₂ - mv₁. The impulse-momentum principle finds its chief application in connection with forces of short duration, such as those arising in collisions or explosions. Such forces are called → impulsive forces.

→ impulse; → momentum; → principle.

Relating to → impulse, the force which is very large but acts for a very short time.

Impulsive, adj. of → impulse; → force.

A substance that is incorporated into a semiconductor material to provide free electrons (n-type impurity) or holes (p-type impurity).

Impurity, from im- negation prefix, → in-, + purity, O.Fr. pureté, from L.L. puritatem (nom. puritas) "cleanness, pureness," from purus "clean;" cf. Av. pūitika- "serving for purification," Mod.Pers. pâk "clean;" Skt. pavi- "to become clean," pávate "purifies, cleanses;" O.H.G. fouwen, fewen "to sift;" PIE base *peu- "to purify, cleanse."

Nâžâvi "impurity," from nâ- negation prefix, → in-, + žâv "pure" + -i noun suffix.

The condition which exists when two waves of the same frequency pass through their maximum and minimum values in a correlated or synchronized way.

→ in; → phase.

Hamfâz, from ham- "together," → com- + fâz→ phase.

Situated in the natural or original position or place.

From L. in, → in-; L. situ, → site.

Dar "in," → in-; jâ, → place.