Where does “semicuspidal” come from?

semicuspidal (English) comes from English cuspidal, from Spanish -al, from Latin -ālis, from Proto-Italic -ālis — forms relational adjectives.

semicuspidal (English): Pertaining to a singularity that is not smooth

Definitions

  1. Pertaining to a singularity that is not smooth

Ancestry of “semicuspidal”, step by step

semicuspidal traces back through two separate lines of ancestry.

via English cuspidal

StepLanguageWordMeaning
1EnglishcuspidalHaving cusps
2Spanish-alIn adjectives, indicating relation; In nouns,...
3Latin-ālis
4Proto-Italic-ālisforms relational adjectives

via English semi

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially
Every word from Proto-Italic -ālisEvery word from Latin -ālisEvery word from Spanish -al