Definitions from Wiktionary (GJ)

▸ noun:  (astronomy) GJ the prefix of catalog entries in the Gliese star catalog, for the Gliese-Jahreiss expansion
▸ noun:  (astronomy) by extension, prefix for any catalogued in the Gliese star catalog
▸ noun:  Abbreviation of Gujarat, a state in India. [A state in western India. Capital: Gandhinagar.]
▸ noun:  (molecular biology, biochemistry) Initialism of gap junction. [(biology) A specialized connection between cells that allows for intercellular communication, or the transfer of low molecular-weight substances]


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