ys

ys

1. (metrology) Symbol for yoctosecond, an SI unit of time equal to 10⁻²⁴ seconds.

• y's

ys

1. plural of y

• Opinions vary regarding the use of apostrophes when forming the plurals of letters of the alphabet. New Fowler’s Modern English Usage, after noting that the usage has changed, states on page 602 that “after letters an apostrophe is obligatory.” The 17th edition of The Chicago Manual of Style states in paragraph 7.15, “To aid comprehension, lowercase letters form the plural with an apostrophe and an s”. The Oxford Style Manual on page 116 advocates the use of common sense.

• SY, Sy, -sy

From Dutch ijs.

• IPA^(key): [ə̟i̯s]

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ys (uncountable)

1. ice, frozen water
2. (slang, drugs) ice, methamphetamine

• ysie

From Middle Cornish eys, from Old Cornish yd, from Proto-Brythonic *ɨd, from Proto-Celtic *ɸitu. Cognate with Breton ed, Irish ioth, and Welsh ŷd.

• IPA^(key): /ɪs/

ys f (singulative ysen)

1. (collective) corn
2. (collective) barley, cereals, corn, wheat

   Synonym: greunvos

ys m (genitive singular yss, no plural)

1. noise, din, racket

ys

1. alternative form of his (“his”)

ys

1. alternative form of his (“his”)

ys

1. alternative form of his (“her”)

ys

1. alternative form of is (“ice”)

ys

1. alternative form of is (“is”)

ys

1. alternative form of is

From Proto-Indo-European *h₁ésti, a form of *h₁es-; compare Old Irish is.

ys

1. (literary) impersonal present progressive of bod

• ydys

ys n

1. ice, frozen water