Gre·go·ri·an calendar 
(grĭ-gôrē-ən)
(grĭ-gôrē-ən)n.
The solar calendar used in most of the world, sponsored by Pope Gregory XIII in 1582 as a corrected version of the Julian calendar. See Table at calendar.
- insubordinately
- insubordination
- insubstantial
- insubstantiality
- insufferable
- insufferably
- insufficiency
- insufficient
- insufficiently
- insufflate
- insufflation
- insufflator
- insula
- insulant
- insular
- Insular Celtic
- insularism
- insularity
- insularly
- insulate
- insulation
- insulative
- insulator
- insulin
- insulin aspart