Skip to definition.
WordWeb
Online
Dictionary and Thesaurus:
WordWeb
WordWeb Online
Windows Software
Free Download
iPhone Dictionary
Help Us Improve
Report an error
Missing word/sense
Links
Crossword Software
Crossword Puzzles
Get the FREE one-click
dictionary software
for Windows.
NEW
iPhone Audio English dictionary
Adjective:
xxi
Being one
more than
twenty
-
twenty-one
,
21
Noun:
XXI
The
cardinal number
that is the
sum
of
twenty
and one
-
twenty-one
,
21
See also:
cardinal
Type of:
large integer
Encyclopedia:
XXI
Nearest
XV
xvi
XVI
XVII
xvii
XVIII
xviii
XX
xx
xxi
XXII
xxii
XXIII
xxiii
xxiv
XXIV
XXIX
xxix
XXV
xxv