تلفظ بین المللی : /kɹˌɪstɐləɡɹˈafɪkəl/ تلفظ : [kr,Ista#l@gr'afIk@L]
English
Pertaining to crystallography.
Having the power to produce an effect or effects; producing a decided or decisive effect; efficient; serviceable; operative; as, an effective force, remedy, speech; the effective men in a regiment. They are not effective of anything, nor leave no work behind them. Bacon. Whosoever is an effective, real cause of doing his heighbor wrong, is criminal. Jer. Taylor...
