Where does “stem mammal” come from?

stem mammal (English) comes from English stem, from English femme, from French femme, from Middle French femme, from Old French fame, from Latin fēmina, from Proto-Italic fēmanā, from Proto-Indo-European dʰeh₁-m̥n-eh₂ — to suckle, nurse.

Ancestry of “stem mammal”, step by step

stem mammal traces back through two separate lines of ancestry.

via English stem

StepLanguageWordMeaning
1EnglishstemThe stock of a family; a race or generation of...
2EnglishfemmeA woman, a wife; a young woman or girl; A...
3Frenchfemmewoman; wife; Alternative form of fem
4Middle Frenchfemmewife; woman
5Old Frenchfamewife, female partner; woman
6Latinfēminawoman
7Proto-Italicfēmanāwoman
8Proto-Indo-Europeandʰeh₁-m̥n-eh₂who sucks; one who is sucked; one who suckles;...
9Proto-Indo-Europeandʰeh₁(y)-to suckle, nurse

via English mammal

StepLanguageWordMeaning
1EnglishmammalAn animal of the class Mammalia, characterized by...
2LatinMammalia
3LatinmammalisOf or for the breasts
4Latinmammaa breast; an udder; a pap; a teat, a dug
5Latinferōto bear; to carry
6Proto-Italicferōcarry, bear
7Proto-Indo-Europeanbʰéretito be carrying
8Proto-Indo-Europeanbʰēr-shiny, light brown
Every word from Proto-Indo-European dʰeh₁(y)-Every word from Proto-Indo-European dʰeh₁-m̥n-eh₂Every word from Proto-Italic fēmanā