The initialism DTC may refer to:
A number of trigraphs are found in the Latin script, most of these used especially in Irish orthography.
⟨aai⟩ is used in Dutch to write the sound /aːi̯/.
⟨abh⟩ is used in Irish to write the sound /əu̯/, or in Donegal, /oː/, between broad consonants.
⟨adh⟩ is used in Irish to write the sound /əi̯/, or in Donegal, /eː/, between broad consonants, or an unstressed /ə/ at the end of a word.
⟨aei⟩ is used in Irish to write the sound /eː/ between a broad and a slender consonant.
⟨agh⟩ is used in Irish to write the sound /əi̯/, or in Donegal, /eː/, between broad consonants.
⟨aim⟩ is used in French to write the sound /ɛ̃/ (/ɛm/ before a vowel).
⟨ain⟩ is used in French to write the sound /ɛ̃/ (/ɛn/ before a vowel). It also represents /ɛ̃/ in Tibetan Pinyin, where it is alternatively written än.
⟨aío⟩ is used in Irish to write the sound /iː/ between broad consonants.
⟨amh⟩ is used in Irish to write the sound /əu̯/, or in Donegal, /oː/, between broad consonants.
The .510 DTC EUROP is a French rifle cartridge developed by Eric Danis in order to comply with firearms legislation in Europe which regulates .50 BMG rifles. In response to the .50 Caliber BMG Regulation Act of 2004, which banned future sales of .50 BMG shoulder-fired rifles in California, long-range shooters in that state have begun to adopt this cartridge as a manner of following the new legislation.
The .510 DTC EUROP uses the same bullet as the .50 BMG, but has slightly different case dimensions. The case is 0.100 inches (2.5 mm) shorter and uses a steeper shoulder than standard .50 BMG ammunition. .510 DTC cases can be made by shortening and then fire-forming .50 BMG cases. The new round has almost identical ballistics, but because of the different dimensions, rifles chambered for the .50 BMG cannot safely fire the .510 DTC, and vice versa, and therefore do not fall under the same legal prohibitions. .510 DTC rifles, like .50 BMG rifles outside California, are simply standard modern rifles and can be purchased as such.