Theta is a Greek letter used to denote a variable, a shape, or an angle in mathematics and science. In English, it is also a term in philosophy and linguistics. The word is typically pronounced with two syllables, stressing the first, and uses a voiceless dental fricative at the start, followed by a short vowel and terminal consonant. In practice, it’s an expert-level term that often appears in academic or technical discussion.
Full pronunciation guide
