What is another word for "sounding"?

Roget's Thesaurus (1911) lists these synonyms for "sounding": abysmal, accent, acoustics, and, ankle, aspirate, audibility, audible, bathometer, bathymetry, benthal, beyond, bottomless, breathing, cadence, cast, concavity, crater, deep, deepen, deepness, depression, depth, diacoustics, diaphonics, dig, distinct, draught, earth, emit, excavate, fathom, fathomless, give, gulf, head, heave, hell, hollow, instrument.