quad·ri·cen·ten·a·ry 
(kwŏd′rĭ-sĕn-tĕnə-rē, -sĕntə-nĕr′ē)
(kwŏd′rĭ-sĕn-tĕnə-rē, -sĕntə-nĕr′ē)n. pl. quad·ri·cen·ten·a·ries
A 400th anniversary or celebration.
adj.
Of or relating to a span of 400 years or to a 400th anniversary.
[From alteration of Latin quadringentī, quadrigentī, four hundred (on the model of such words as TERCENTENARY); see kwetwer- in the Appendix of Indo-European roots.]
- Indo-European root: leuk-
- Indo-European root: leu(ə)-
- Indo-European root: lē-
- Indo-European root: līk-
- Indo-European root: lī̆no-
- Indo-European root: lūs-
- Indo-European root: mag-
- Indo-European root: magh-
- Indo-European root: maghu-
- Indo-European root: man-
- Indo-European root: man-
- Indo-European root: marko-
- Indo-European root: me-
- Indo-European root: me-
- Indo-European root: med-
- Indo-European root: medhu-
- Indo-European root: medhyo-
- Indo-European root: meg-
- Indo-European root: mei-
- Indo-European root: mei-
- Indo-European root: meigh-
- Indo-European root: meik-
- Indo-European root: mei-no-
- Indo-European root: mel-
- Indo-European root: mel-