Where does “semiannually” come from?

Semiannually derives from English semi- combined with English annual, from Latin annualis meaning yearly, from Latin -alis and Proto-Italic atnos, ultimately from Proto-Indo-European h₂et-no-.

semiannually (English): In a semiannual manner, twice yearly

Definitions

  1. In a semiannual manner, twice yearly

Ancestry of “semiannually”, step by step

StepLanguageWordMeaning
1EnglishsemiA semi-detached house; A semitrailer; a...
2Englishsemi-half; partial, incomplete; somewhat, rather,...
3Latinsēmi-half
4Proto-Indo-Europeansēmihalf; partially
Every word from Proto-Indo-European sēmi →Every word from English semi- →Every word from English semi →
semiannually — Etymology, Origin & Word History | Etymology Explorer