Wordnet Synset 13635537-n

http://lila-erc.eu/data/lexicalResources/LatinWordNet/id/LexicalConcept/13635537-n an entity of type: LexicalConcept

(physics) a unit of nuclear cross section; the effective circular area that one particle presents to another as a target for an encounter
Wordnet Synset 13635537-n 

data from the linked data cloud