inspiral
/IH1 N S P AY1 R AH0 L/verb
- 1
(astronomy) To spiral inward.
adjective
- 1
(astronomy) Describing the paths of a pair of astronomical bodies (e.g. binary stars or black holes) that are spiralling in towards each other, losing energy to gravitational waves.
noun
- 1
(astronomy) The path of such a body.
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