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

1) (v.) To enumerate; reckon up; calculate; compute.
2) (n.) A single ionizing event registered by a device such as a → Geiger counter.
The indication of the total number of ionizing events registered by a device.

From O.Fr. conter "add up," from L. computare, → compute.

Šomârdan, from Mid.Pers. ôšmârtan, ôšmurtan "to reckon, calculate, enumerate, account for," from Av. base (š)mar- "to have in mind, remember, recall," pati-šmar- "to recall; to long for," hišmar-, cf. Skt. smar- "to remember, become aware," smarati "he remembers," L. memor, memoria, Gk. mermera "care," merimna "anxious thought, sorrow," martyr "witness."

1) The backward counting in fixed time units from the initiation of a project, as a rocket launching, with the moment of firing designated as zero.
2) The final preparations made during this period (Dictionary.com).

→ count; → down.

Generally,a device for indicating a number or amount.
Any of various instruments for detecting ionizing radiation and for registering counts. → Geiger counter.

M.E. countour, from O.Fr. conteor, from L. computator, from computa(re) "to compute" + → -tor suffix forming personal agent nouns mainly from verbs.

Šomârgar, from šomâr present tense stem of šomârdan "to count," → count + agent suffix -gar.

A prefix used with the meanings "against, contrary, opposite." → contra-.

M.E. countre-, from O.Fr. contre-, from L. contra "opposite, against;" PIE base *kom- "beside, near, by, with."

Pâd- "contrary to; against; opposing," variants pâ- (pâsox, pâzahr, pâhang, → response), paž- (pažvâk, → echo, pažâvand "the bar of a door or a gate, door lock"), baž- (bažkam, → forbidden), pat- (patvâz, → correspond), pa- (panâh, padid), from Mid.Pers. pât-, from O.Pers. paity "agaist, back, opposite to, toward, face to face, in front of," Av. paiti, akin to Skt. práti "toward, against, again, back, in return, opposite," Pali pati-, Gk. proti, pros "face to face with, toward, in addition to, near;" PIE *proti.

An equal weight, power, or influence acting in opposition.

→ counter-; → balance.

In a direction opposite to the rotating hands of a clock.

From counter- "contrary; opposite; opposing," + → clockwise.

Pâdsâ'atsu, from pâd-, → counter-, + sâ'atsu, → clockwise.

Logic: An individual case or instance that falsifies a universal generalization. A counterexample to an → argument is a situation in which the → premises are → true, but the → conclusion is → false. For example, "All dogs are mammals" (true). "All cats are mammals" (true). "Therefore, all cats are dogs." (false).

→ counter-; → example.

The movement of a fluid in the opposite direction to a fluid flowing in the same cross section of a turbulent medium.

→ counter-; → flow.

Same as → gegenschein.

A person or thing that corresponds to or has the same function as another person or thing in a different place or situation (OxfordDictionaries.com).
→ electromagnetic counterpart, → optical counterpart, → radio counterpart.

M.E., from O.Fr. contrepartie, from contre "facing, opposite," → counter-, + partie "copy of a person or thing," originally feminine p.p. of partir "to divide."

Hamtâ "counterpart, resembling, equal," from ham- "together, with; same, equally, even," → com-, + tâ "fold, plait, ply; piece, part," also a multiplicative suffix; Mid.Pers. tâg "piece, part."

A weight that balances another weight.

→ counter-; → weight.

Pârsang "a make-weight," from pâr-, a variant of pâd-, → counter-, + sang a variant of sanj, sanjidan "to measure; compare, put in balance," → object; alternatively, pârsang "a piece of stone," from pâr, short for pâré "piece, part," + sang, → stone, meaning "weight."

1) A nation or state; the territory of a nation or state.
2) An area or expanse outside large urban areas; the countryside; rural area.

M.E. contre, contree, from O.Fr. contree, from V.L. (terra) contrata "(land) lying opposite," or "(land) spread before)," derived from L. contra "against, opposite," → contra-.

1) Kešvar "country; clime;" Mid.Pers. kišwar "region, clime, continent;" Av. karšvar-, from karš- "to furrow," karšu- "tilled ground."
2) Rustâ, → countryside.

A rural area; he inhabitants of a countryside.

→ country; → side.

Rustâ, from Mid.Pers. rôstâk, rôtastâk "village, district, river-bed;" loaned into Armenian rotstak, ərotastak "district."

1) General: Two items of the same kind; a pair; something that joins or connects two things together; a link.
2) A system of two equal and opposite, parallel, but not → collinear forces acting upon a body.
3) To fasten, join together; connect. See also → coupled, → coupled system, → charge-coupled device, → coupling, → decouple, → galvanic couple, → Nasireddin couple, → pair; → parity, → thermocouple.

1) joft "pair, couple," Lori, Laki jeft, Qâyeni jof, Tabari jeft, Mid.Pers. yuxt "pair, couple," Av. yuxta- "a team of horses," from yaog- "to yoke, harness, put to; to join, unite," infinitive yuxta, Mid.Pers. jug, ayoxtan "to join, yoke," Mod.Pers. yuq "yoke," cf. Skt. yugam "yoke," Gk. zygon "yoke," zeugnyanai "to join, unite," L. jugare "to join," from jugum "yoke," P.Gmc. *yukam, E. yoke; PIE *yeug- "to join."
2) joftniru, from joft as above + niru, → force.
3) Joftidan, infinitive from joft, → couple; jafsar kardan infinitive from jafsar, → coupled, + kardan "to do, to make."

Joined together, connected by a link. → coupled system, → charge-coupled device.

Adj. from → couple.

Jafsar "connected, joined pair," in Tâleši, from jaf, variant of joft, as above + sar "head," literally "joined by head" (Mid.Pers. sar, Av. sarah- "head," Skt. siras- "head," Gk. kara "head," keras "horn," Mod.Pers. sarun "horn," L. cerebrum "brain;" PIE *ker- "head, horn"); joftidé adj./p.p. from joftidan, → couple.

A set of two or more mechanical vibrating systems connected so that they interact with one another.

→ coupled; → system;

The act of linking together or forming couples; a connection between two things so they move together.
The quality of coupled systems or the way they are coupled.

Noun from → couple; → -ing.

A parameter that indicates the strength of the interaction between two systems.

→ coupling; → coefficient.

In nuclear physics, a constant that indicates a measure of how strongly two particles interact.

→ coupling; → constant.

The quality of mind or spirit that enables a person to face difficulty, danger, pain, etc.

M.E. corage, from O.Fr., derivative of cœur "heart," from L. cor, cognate with Pers. del and E. → heart

Pordeli, deliri, from pordel, delir, → courageous.
Darš, → dare.