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Moho
CIDE DICTIONARY
Moho, n. [Native name.].
A gallinule (Notornis Mantelli ) formerly inhabiting New Zealand, but now supposed to be extinct. It was incapable of flight. See Notornis. [1913 Webster]
Moho, n. [Short for Mohorovicic discontinuity, from Andrija Mohorovi , a Yugoslavian geologist.].
The boundary between the earth's crust and the semiliquid mantle beneath. It varies in depth from 3 miles beneath the surface at certain points in the ocean to over 25 miles under certain parts of continents. [PJC]
OXFORD DICTIONARY
Moho, n. (pl. -os) Geol. a boundary of discontinuity separating the earth's crust and mantle.
Etymology
A. Mohorovicic, Yugoslav seismologist d. 1936
For further exploring for "Moho" in Webster Dictionary Online
