| 单词 | hydronaut |
| 释义 | hydronaut in British English (ˈhaɪdrəʊˌnɔːt) noun US navy a person trained to operate deep submergence vessels Word origin C20: from Greek, from hydro- + -naut, as in aeronaut, astronauthydronaut in American English (ˈhaidrəˌnɔt, -ˌnɑt) noun a person trained to work in deep-sea vessels for research and rescue purposes Word origin [1965–70, Amer.; hydro-1 + (aero)naut]This word is first recorded in the period 1965–70. Other words that entered Englishat around the same time include: hired gun, isometric exercise, overdub, stun gun, wraparoundhydro- is a combining form meaning “water,” used in the formation of compound words. Otherwords that use the affix hydro- include: hydrofoil, hydrography, hydrometer, hydrophone, hydrosphere |
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