Where does “semistriated” come from?

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

Ancestry of “semistriated”, step by step

semistriated 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 striated

StepLanguageWordMeaning
1EnglishstriatedHaving parallel lines or grooves on the surface;...
Every word from Proto-Indo-European sēmiEvery word from English semi-Every word from English semi