adjective
- next after the seventh.
- being one of eight equal parts.
noun
- an eighth part, especially of one (⅛).
- the eighth member of a series.
- Music. octave.
adverb
- in the eighth place; eighthly.
adjective
- (usually prenominal)
- coming after the seventh and before the ninth in numbering or counting order, position, time, etc; being the ordinal number of eight: often written 8th
- (as noun)the eighth in line
noun
-
- one of eight equal or nearly equal parts of an object, quantity, measurement, etc
- (as modifier)an eighth part
- the fraction equal to one divided by eight (1/8)
- another word for octave
adverb
- Also: eighthly after the seventh person, position, event, etc
late 14c., eighthe, from Old English eahtoða; see eight + -th (1). Cf. Old High German ahtoda, Old Frisian achta, German achte, Gothic ahtuda.