What's the difference between i.e. and e.g.?
1725, "sound of the letter 'H'," especially at the beginning of a word, from Latin aspiratio "a breathing, exhalation, the pronunciation of the letter H" (see aspire).
"to pronounce with audible breath," 1700; perhaps a back-formation from aspiration (n.2), or from French aspirer (1520s), or directly from Latin aspiratus, past participle of aspirare (see aspire). Related: Aspirated; aspirating.
aspirate as·pi·rate (ās'pə-rāt')
v. as·pi·rat·ed, as·pi·rat·ing, as·pi·rates
To take in or remove by aspiration. n. (-pər-ĭt)
A substance removed by aspiration.
the sound h as in English "hat." Consonant sounds such as the English voiceless stops p, t, and k at the beginning of words (e.g., "pat," "top," "keel") are also aspirated because they are pronounced with an accompanying forceful expulsion of air. Such sounds are not aspirated at the end of words or in combination with certain consonants (e.g., in "spot," "stop"). The voiced stops b and d in Sanskrit and Hindi also have aspirated forms that are usually transliterated as bh and dh.