Crab

nounproper nouncommon in dialogue

A unit for measuring the intensity of astrophysical X-ray sources, defined as the intensity of the Crab Nebula at the corresponding X-ray photon energy.

noun

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

proper noun

1
The constellation and zodiacal sign Cancer.
This Crab, I confeſſe, did ill become the heavens[.]
Cancer, or the Crab, commandeth the Stomach, Limbs, Arteries, Milt, Liver and Gall.
The Crab was said to be sent by Juno to bite Hercules in the heel; the Scorpion to have been sent by Ceres to sting Orion.
The Crab and the Scorpion much resemble each other, as indeed they do in many other instances, the former being a reduplication of the latter.

Forms

plural: Crabs

Coyote · An island of El Salvador.coz · cousin (usually as a term of address)crab · Any crustacean of the infraorder Brachyura, having five pairs…

Crab · A unit for measuring the intensity of astrophysical X-ray sources, defined as the intensity of the Crab Nebula at the corresponding X-ray photon…

crabs · Pubic lice.Crabtree · A suburb of the City of Plymouth, Devon, England (OS grid ref…crack · To form cracks.

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