thirtieth

[ thur-tee-ith ]
/ ˈθɜr ti ɪθ /

adjective

next after the twenty-ninth; being the ordinal number for 30.
being one of 30 equal parts.

noun

a thirtieth part, especially of one (1/30).
the thirtieth member of a series.

Origin of thirtieth

before 900; thirty + -eth2; replacing Middle English thrittythe, Old English thrītegtha

Words nearby thirtieth

thirteen colonies, thirteen-lined ground squirrel, thirteenth, thirteenth amendment, thirteenth chord, thirtieth, thirty, thirty days hath september, thirty pieces of silver, thirty years' war, thirty-eight

Example sentences from the Web for thirtieth

British Dictionary definitions for thirtieth

thirtieth
/ (ˈθɜːtɪɪθ) /

adjective

(usually prenominal)
  1. being the ordinal number of thirty in counting order, position, time, etc: often written 30th
  2. (as noun)the thirtieth of the month

noun

  1. one of 30 approximately equal parts of something
  2. (as modifier)a thirtieth part
the fraction equal to one divided by 30 (1/30)