- assiduity (n.)
- early 15c., from Latin assiduatem "continual presence," noun of quality from past participle stem of assiduus (see assiduous).
- conduit (n.)
- c. 1300, conduyt, from Old French conduit (12c.) "escort, protection; pipe, channel," from Latin conductus "a leading, a pipe" (see conduct). A doublet of conduct, differentiated in meaning from 15c.
- Hinduism (n.)
- blanket term for "polytheism of India," 1829, from Hindu + -ism.