Intercalary
Pronunciation : In*ter"ca*la*ry
Part of Speech : a.
Etymology : [L. intercalaris, intercalarius: cf. F. intercalaire. See Intercalate.]
Definition : 1. (Chron.)
Defn: Inserted or introduced among others in the calendar; as, an intercalary month, day, etc.; -- now applied particularly to the odd day (Feb. 29) inserted in the calendar of leap year. See Bissextile, n.
2. Introduced or inserted among others; additional; supernumerary. "Intercalary spines." Owen. This intercalary line . . . is made the last of a triplet. Beattie. Intercalary day (Med.), one on which no paroxysm of an intermittent disease occurs. Mayne.
Source : Webster's Unabridged Dictionary, 1913