- tetra-n-butyllead
- tetrandrine
- tetranectin
- tetranitropentaerythrite
- tetranychid mite
- tetraphenylarsonium-tetraphenylborate (TPAs-TPB) assumption
- tetraphenyl m-phenylene bis(phosphate)
- tetraploid
- tetraploidy
- tetrapod
- tetrapodomorphs
- tetraquark state
- tetrasaccharide
- tetrasomic
- tetrasomy
- tetrasporangium
- tetraspore
- tetrasporic embryo sac
- tetrasulfur tetranitride
- tetraterpene
- tetrathiafulvalene
- tetration
- tetravalent
- tetrazene
- tetrazole