ides 
(īdz)
(īdz)pl.n. (used with a sing. or pl. verb)
The 15th day of March, May, July, or October or the 13th day of the other months in the ancient Roman calendar.
[Middle English, from Old French, from Latin Īdūs, probably of Etruscan origin.]
- intracranial
- intracranially
- intractability
- intractable
- intractableness
- intractably
- intracutaneous
- intracutaneously
- intracytoplasmic
- intraday
- intradermal
- intradermally
- intradermal test
- intrados
- intrafallopian
- intragalactic
- intramolecular
- intramolecularly
- intramural
- intramurally
- intramuscular
- intramuscularly
- intranasal
- intranasally
- intranational