# Eighties

[ey-tee] /ˈeɪ ti/

**noun**, plural eighties.

1.

a cardinal number, ten times eight.

2.

a symbol for this number, as 80 or LXXX.

3.

a set of this many persons or things.

4.

eighties, the numbers, years, degrees, or the like, from 80 through 89, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature.

**adjective**

5.

amounting to 80 in number.

/ˈeɪtɪ/

**noun** (pl) -ies

1.

the cardinal number that is the product of ten and eight See also number (sense 1)

2.

a numeral, 80, LXXX, etc, representing this number

3.

(pl) the numbers 80–89, esp a person’s age or the year of a particular century

4.

the amount or quantity that is eight times as big as ten

5.

something represented by, representing, or consisting of 80 units

determiner

6.

n.

1827 as the years of someone’s life between ages 80 and 89; 1833 as the ninth decade of years in a given century; 1854 with reference to Fahrenheit temperature. See eighty.

n.

eigteti (late 13c.), from eight + -ty (1). Replacing Old English hundeahtatig, with hund- “ten.” Related: Eightieth.

Tagged: e

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[ey-tee-ith] /ˈeɪ ti ɪθ/ adjective 1. next after the seventy-ninth; being the ordinal number for 80. 2. being one of 80 equal parts. noun 3. an eightieth part, especially of one (1/80). 4. the eightieth member of a series. /ˈeɪtɪɪθ/ adjective 1. (usually prenominal) noun 2. 3. the fraction equal to one divided by 80 […]

- Eightpenny
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algorithm A puzzle in which one has to place eight queens on a chessboard such that no queen is attacking any other, i.e. no two queens occupy the same row, column or diagonal. One may have to produce all possible such configurations or just one. It is a common students assignment to devise a program […]