(mineralogy, petrology) the branch of mineralogy that studies mineral gems and petrified gemstones

(now historical) A commander-in-chief; the head of an armed force.

(programming) A style of computer programming in which algorithms are written in terms of to-be-specified-later types that are then instantiated when needed for specific types provided as parameters.

plural of gender gap

(US, dated minced oath) Gee, gosh.

Alternative form of governor general

(Canada, Australia, New Zealand) An official appointed by the reigning British monarch to govern a Commonwealth realm as the monarch's representative.

plural of general anesthetic

plural of general anaesthetic

(genetics) A technique in which fragments of DNA (often from different individuals or species) are combined to form recombinant DNA, especially as a part of genetic engineering.