eighty Definition

eighty
noun eighties

1a. The cardinal number 80;
1b. The quantity that this represents, being one more than seventy-nine, or the product of ten and eight.
2. Any symbol for this, eg 80, LXXX. Also in compounds, forming adjectives and nouns, with cardinal numbers between one and nine.

Example: eighty-two
3. The age of 80.
4. A set or group of 80 people or things.

Example: a score of eighty points

adj

1. Totalling eighty. Also with ordinal numbers beween first and ninth.

Example: eighty-second
2. Aged 80. See also eighties, eightieth.

Etymology: Anglo-Saxon; see eighty + -ty².