decenniad
English
Etymology
From
decennium
+
-iad
, q.v.
Noun
decenniad
(
plural
decenniads
)
(
uncommon
)
Synonym of
decade
: a
period
of
10
years
.
References
“
decenniad,
n.
”, in
OED Online
, Oxford:
Oxford University Press
,
2021
.