|1.||the eighth letter of the Greek alphabet (Θ, θ), a consonant, transliterated as th|
|2.||Compare edh the lower-case form of this letter used in phonetic transcription to represent the voiceless dental fricative th as in thick, both|
|[C17: from Greek, of Semitic origin; compare Hebrew tēth]|
theta the·ta (thā'tə, thē'-)
Symbol θ The eighth letter of the greek alphabet.