crab

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. A [[unit]] for measuring the [[intensity]] of [[astrophysical]] [[X-ray]] [[source]]s, defined as the intensity of the [[Crab Nebula]] at the corresponding X-ray photon energy.

Proper noun

1. {{lb|en|astronomy|astrology}} The constellation and zodiacal sign [[Cancer]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.