- globefish
- greenland spar
- gigantism
- gamete
- gerbert
- groundhog
- grab sample
- gompers
- galactosemia
- genetically open system
- genetically determined defect
- genetically closed system
- genetical equilibrium
- glossodynia exfoliativa
- griping pain
- giant reed
- great plains of north america
- graving tool
- green peach aphid
- geometricl
- globus syndrome
- giovanni vincenzo pecci
- giovanni mastai_ferretti
- glowworm
- grossbeak
- goal_directed
- geothermal energy
- gilbert stuart
- gilbert charles stuart
- general program
- grammatical meaning
- general relativity theory
- general theory of relativity
- general relativity
- geometrical regularity
- graticule
- gravimetric factor
- gracilariid
- glenn miller
- gideon algernon mantell
- give a thick ear
- gastroptosis
- glomerular filtrate
- glomerular artery
- genital system
- gravity wave
- geomedicine
- greenwich meridian
- greg norman
- gummatous arthritis