z

z

z¹ or Z [zē; ] Brit [ zed]

n.

pl. Z's, z's

1. the twenty-sixth and last letter of the English alphabet: via Latin from the Greek zeta

2. any of the speech sounds that this letter represents, as, in English, the (z) of zone

3. a type or impression for z or Z

4. the twenty-sixth in a sequence or group

5. an object shaped like Z

☆ 6. [see ZZZ] [pl.] Slang sleep: often in the phrase get (or catch, etc.) some (or a few, etc.) z's to sleep for a while

adj.

1. of z or Z

2. twenty-sixth in a sequence or group

3. shaped like Z

z² [zē]

n.

Math.

1. the third of a set of unknown quantities, x and y usually being the first two

2. a variable

z³

abbrev.

1. Astron. zenith distance

2. zepto-

3. zero

4. zone