protomammal
noun
(An informal name for) a hypothetical primitive mammal or a known evolutionary ancestor of the mammals.
Origin
1930s.
- interfere
- interference
- interference fit
- interferential
- interferer
- interfering
- interferingly
- interferogram
- interferogramme
- interferometer
- interferometric
- interferometrically
- interferometry
- interferon
- interfile
- interflow
- interfluve
- interfluvial
- interfuse
- interfusion
- intergalactic
- intergalactically
- intergenerational
- intergeneric
- interglacial