— centennially , adv.
/sen ten"ee euhl/ , adj.
1. pertaining to, or marking the completion of, a period of 100 years.
2. pertaining to a 100th anniversary.
3. lasting 100 years.
4. 100 years old.
n.
5. a 100th anniversary or its celebration; centenary.
[ 1790-1800; cent- 100 (see CENT) + E -ennial pertaining to a period of years (extracted from BIENNIAL) ]