An Etymological Dictionary of Astronomy and Astrophysics

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory



Number of Results: 14 Search : compound
aromatic compound
  همنات ِ اروماتیک   
hamnât-e aromâtik

Fr.: composé aromatique   

An organic compound which contains benzene rings in its structure. The simplest is therefore benzene (C6H6). Aromatic compounds have a planar ring of atoms linked by alternate single and double bounds.

aromatic; → compound.

chemical compound
  همنات ِ شیمیایی   
hamnât-e šimiyâyi

Fr.: composé chimique   

A substance whose molecules are made up of atoms of at least two different elements.

chemical; → compound.

  ۱) همنات؛ ۲) همناتیدن   
1) hamnât; 2) hamnâtidan

Fr.: 1) composé; 2) composer   

1a) General: Consisting of two or more separate substances, ingredients, elements, or parts. A compound usually constitutes a new and independent entity with regard to its components. → composite, → combination.
1b) Chemistry: A substance whose molecules are made up of at least two different elements.
1c) Linguistics: A word consisting of two or more independent elements such as sunflower, eyeball, football.
2a) To combine so as to form a whole; mix.
2b) To produce or create by combining two or more ingredients or parts; compose or make up.

M.E. compouned, p.p. of compounen, M.Fr. compon-, stem of compondre, from L. componere, → compose.

Hamnât, literally "placed together," from ham- "together," → com-, + nât "placed, put," variant of nâd, nâde, from Lori nâdan "to place, put" (Tabari da-nâyan "to place, put"), variant of nehâdan "to place, put," → compose.

compound angle
  زاویه‌ی ِ همنات   
zâviye-ye hamnât

Fr.: angle composé   

An angle that results from the combination of two other angles. These angles are expressed by → compound angle formulae.

compound; → angle.

compound angle formula
  دیسول ِ زاویه‌ی ِ همنات   
disul-e zaviye-ye hamnât

Fr.: formule d'angle composé   

One of eight equations that give the → trigonometric functions of → compound angles.
sin(A± B) = sinA.cosnd angleB± cosA.sinB
cos(A + B) = cosA.cosB - sinA.sinB
cos(A - B) = cosA.cosB + sinA.sinB
tan(A + B) = (tanA + tanB)/(1 - tanA.tanB)
tan(A - B) = (tanA - tanB)/(1 + tanA.tanB).

compound; → angle; → formula.

compound curve
  خم ِ همنات   
xam-e hamnât

Fr.: courbe composée   

A curve that is made up of a series of successive tangent circular arcs.

compound; → curve.

compound event
  رویداد ِ همنات   
ruydâd-e hamnât

Fr.: événement composé   

In statistics, an event whose probability of occurrence depends upon the probability of occurrence of two or more independent events.

compound; → event.

compound fraction
  برخه‌ی ِ همنات   
barxe-ye hamnât

Fr.: fraction composée   

Same as → complex fraction.

compound; → fraction.

compound lens
  عدسی ِ همنات   
adasi-ye hamnât

Fr.: lentille composée   

A lens system consisting of two or more lenses with the same radius used together in order to remove aberrations found in a single lens.

compound; → lens.

compound nucleus
  هسته‌ی ِ همنات   
hasteh-ye hamnât

Fr.: noyau composé   

A temporary excited state of the atomic nucleus which results from the collision of an incident energetic particle with a target nucleus. Subsequently the nucleus decays by emitting particle(s).

compound; → nucleus.

compound number
  عدد ِ همنات   
adad-e hamnât

Fr.: nombre composé   

A quantity expressed as the sum of two or more quantities of differing units. For example 5 hours and 15 minutes or 4 meters and 20 centimeters. → composite number.

compound; → number.

compound proposition
  گزاره‌ی ِ همنات   
gozâre-ye hamnât

Fr.: proposition composée   

A statement formed from simple statements by the use of words such as "and," "or," "not," "implies," or their corresponding symbols.

compound; → proposition.

compound verb
  کرواز ِ همنات   
karvâz-e hamnât

Fr.: verbe composé   

A verb that is made up of several words, such as tear up, take away, double-click.

compound; → verb.

coordination compound
  همنات ِ هم‌آرایش   
hamnât-e hamârâyeš

Fr.: composé de coordination   

A chemical compound in which a group of atoms or ions are attached by a coordination bond to a usually metallic central atom or ion.

coordination; → compound.