A sphere flattened at the poles.
Watch out! You may see this word with another pronunciation and its meaning is then different.
Used as a noun, listen here, it means: A sphere flattened at the poles. Used as a verb, listen here, it means: NtV- Offer, to make an oblation of. Also: noun- One offered or devoted to the religious life; esp. a person living in or associated with a religious community, but not bound by vows.