1 [ob-leyt, o-bleyt]
flattened at the poles, as a spheroid generated by the revolution of an ellipse about its shorter axis (opposed to prolate ).

1695–1705; < Neo-Latin oblātus lengthened, equivalent to Latin ob- ob- + (prō)lātus prolate

oblately, adverb
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oblate1 (ˈɒbleɪt)
Compare prolate having an equatorial diameter of greater length than the polar diameter: the earth is an oblate sphere
[C18: from New Latin oblātus lengthened, from Latin ob- towards + lātus, past participle of ferre to bring]

oblate2 (ˈɒbleɪt)
a person dedicated to a monastic or religious life
[C19: from French oblat, from Medieval Latin oblātus, from Latin offerre to offer]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

"flattened on the ends," 1705, from L. ob "toward" + latus, abstracted from its opposite, prolatus "lengthened" (see oblate (n.)).

"person devoted to religious work," 1756, from M.L. oblatus, noun use of L. oblatus, variant pp. of L. offerre "to offer, to bring before" (latus "carried, borne" used as suppletive pp. of ferre "to bear"), from *tlatos, from PIE base *tel-, *tol- "to bear, carry" (see extol).
Online Etymology Dictionary, © 2010 Douglas Harper
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