Where does “semisupine” come from?

semisupine (English) comes from English semi, from English semi-, from Latin sēmi-, from Proto-Indo-European sēmi — half; partially.

semisupine (English): Positioned so that the upper body is tilted and...

Definitions

  1. Positioned so that the upper body is tilted and...

Ancestry of “semisupine”, step by step

semisupine traces back through two separate lines of ancestry.

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially

via English supine

StepLanguageWordMeaning
1EnglishsupineLying on its back; Reluctant to take action due...
2Latinsupīnuslying down with face upwards; supine, on one's back
3Proto-Indo-Europeanupóunder, below
4Proto-Indo-Europeanh₃ewp-
Every word from Proto-Indo-European sēmiEvery word from English semi-Every word from English semi