transcription, транскрипция: [ ɪˈsenʃəl ]
adj. & n. --adj. 1 absolutely necessary; indispensable. 2 fundamental, basic. 3 of or constituting the essence of a person or thing. 4 (of a disease) with no known external stimulus or cause; idiopathic. --n. (esp. in pl.) a basic or indispensable element or thing. øessential element any of various elements required by living organisms for normal growth. essential oil a volatile oil derived from a plant etc. with its characteristic odour. øøessentiality n. essentially adv. essentialness n. [ME f. LL essentialis (as ESSENCE)]