An especially active, vigorous advocate of a cause, especially a political cause (Dictionary.com).
Agent noun from → activism.
For a radioactive substance, the average number of atoms disintegrating per unit time.
Activity, from → active + -ity.
Žirandegi, noun from žirandé, → active.
1) One who takes part; a participant.
Žirandé adj./noun from žir, → act + suffix -andé. Žirmand, from žir + mand.
1) Existing in act or fact; real.
M.E. actuel, from O.Fr. actuel "now existing, up to date," from L. actualis "active, pertaining to action," adj. form of actus, → act.
Žirvand, from žir, → act, + -vand a suffix forming adjectives denoting "possessed of, similarity, relation," variants -âvand, -van (e.g. xodâvand "possessor, master," pulâdvand "hard as steel, name of a hero," dowlatvand "rich," setarvan "mule-like, barren," polvan "bridge-like, a raised path"), from Mid.Pers. -âwand (hunarâwand "skilled," warzâwand "powerful"); Av. -vant (aurvant- "swift," surunvant- "audible"); cf. Skt. -vant (amavant- "having attacking power").
1) The quality or state of being actual or something that is actual; reality.
The act or process of actualizing.
živandidan, živand kardan
To make actual or real; turn into action or fact.
Fr.: actionner, déclencher
1) To put into mechanical action or motion.
From L. actuatus, p.p. of actuare, from actus, → act.
Fr.: actionnement, déclenchement
The act or process of putting into action; activation.
Verbal noun of → actuate.
A mechanism to activate process control equipment by use of pneumatic, hydraulic, or electronic signals.
Sharpness; acuteness; keenness of perception.
M.E., from M.Fr. acuité, from M.L. acuitatem (nom. acuitas) "sharpness," from L. acus "needle," acuere "to sharpen," from PIE root *ak- "be sharp."
Tiznâ "sharpness," from tiz, "→ sharp," + -nâ, a suffix that transforms adjective into noun (compare with tangnâ, derâznâ, farâxnâ, etc.).
acuity of vision
Fr.: acuité visuelle
The ability of the → eye to see separately two points close to each other. It is a measure of the → resolving power of the eye's → optical system and depends on the density of cells in the → retina. The maximum acuity of the normal human eye is around 0.5 minutes of arc.
Fr.: ad hoc
For the specific purpose at hand, as opposed to a general solution; also, by extension, improvised or impromptu.
From L. ad "to, with, in," cf. Skt. adhi "near," PIE *ad- "to, near, at."
Pad im, from Mid.Pers. pad "to, at, for, in" (Mod.Pers. bé "to, for, in, on, with, by"); O.Pers. paity "agaist, back, opposite to, toward, face to face, in front of;" Av. paiti "to, toward, in, at;" cf. 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) + Mid.Pers. im "this;" from Old.Pers./Av. ima "this;" Skt. imá; cf. Lori (Laki) im "this side." The Mid.Pers. im occurs in Mod.Pers. as em- in emruz "today," emšab "tonight," and emsâl "this year."
ad hoc hypothesis
engâre-ye pad im
Fr.: hypothèse ad hoc
Addition of adjustments to a theory to save it from being falsified by compensating for anomalies not anticipated by the theory in its unmodified form. Theories that rely on continual, ad hoc adjustments are distrusted.
Fr.: ad hominem
A fallacious objection to an argument or factual claim by appealing to a characteristic or belief of the person making the argument or claim, rather than by addressing the substance of the argument or producing evidence against the claim (wiktionary).
Prefix meaning "to, toward, addition to, near," from L. ad "to, toward." It is modified to ac- or af- or ag- or al- etc. according to the following consonant.
Cognate with E. at, from O.E. æt "near, by, at"; compare with O.N., Goth. at, O.Fris. et, O.H.G. az, Skt. adhi "near," PIE *ad- "to, near, at".
Fr.: adapter, s'adapter
To make suitable to or fit for a specific use or situation.
From M.Fr. adapter, from L. adaptare "adjust," from ad- "to" + aptare "join," from aptus "fitted."
Niyâvidan from Mid. Pers. niyâw "apt, suitable, appropriate" + -idan verb making suffix.
Capable of adapting or of being adapted.
1) The act or process of adapting.
adaptation of the eye
Fr.: adaptation de l'oeil
Physiological process whereby the eye adjusts its sensitivity for different levels of illumination.