Meaning of -TH in English

-TH

[-th] --see -eth

[2]-th or -eth adj suffix [ME -the, -te, fr. OE -tha, -ta; akin to OHG -do -th, L -tus, Gk -tos, Skt -tha]--used in forming ordinal numbers "hundredth" "fortieth" [3]-th n suffix [ME, fr. OE; akin to OHG -ida, suffix forming abstract nouns, L -ta, Gk -te, Skt -ta] 1: act or process "spilth"

2: state or condition "dearth" [4]-th symbol [

[2]-th]--used with the figures 4, 5, 6, 7, 8, 9, and 0 and related Roman numerals to indicate an ordinal number "25th" "50th wedding anniversary" "XXVth Olympiad"

Merriam-Webster English vocab.      Английский словарь Merriam Webster.