inspiral

== English == === Etymology === From in- +‎ spiral. === Adjective === inspiral (not comparable) (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 === inspiral (plural inspirals) (astronomy) The path of such a body. === Verb === inspiral (third-person singular simple present inspirals, present participle (US) inspiraling or (UK) inspiralling, simple past and past participle (US) inspiraled or (UK) inspiralled) (astronomy) To spiral inward. === Anagrams === spiralin