⟨th⟩ is used in academic transcription systems to represent letters in south and east Asian alphabets that have the value /tʰ/. According to the Royal Thai General System of Transcription, for example, ⟨th⟩ represents a series of Thai letters with the value /tʰ/.

Chemistry thorium. Chemistry radioactinium. warmth). twelfth). var. of -eth 1 : doth. Thursday. Place Names Territory of Hawaii. -th,1 suffix. -th,2 suffix. -th is attached to words that refer to numbers to form adjectives referring to the number mentioned: (four + -th →) fourth; tenth.

Latin Th digraph. Th is a digraph in the Latin script. It was originally introduced into Latin to transliterate Greek loan words. In modern languages that use the Latin alphabet, it represents a number of different sounds. It is the most common digraph in order of frequency in the English language.

Here is the TH in THOUGHT. This TH is unvoiced, and the tongue tip always has to come through for an unvoiced TH. Plus, this word is stressed. Let’s watch the whole phrase again. TH in than, tongue tip not coming through. TH in thought, tongue tip coming through.

var. of -eth 1 : doth. Thursday. Place Names Territory of Hawaii. -th,1 suffix. -th,2 suffix. -th is attached to words that refer to numbers to form adjectives referring to the number mentioned: (four + -th →) fourth; tenth. #2, 5-th street - is an article needed? 30 th generation down the line from the famous king.

In some Middle English manuscripts, ⟨th⟩ appears for ⟨t⟩ or ⟨d⟩: tho 'to' or 'do', thyll till, whythe white, thede deed. In Modern English we see it in Esther, Thomas, Thames, thyme, Witham (the town in Essex, not the river in Lincolnshire which is pronounced with /ð/) and the old spelling of Satan as Sathan.