●In Sociology & Collective numbers:
Two
in an
relationship;
relationship.
●In Music & Collective numbers:
Any set of two different
classes.
●In Chemistry & Collective numbers:
An
,
, or
having a
of or
power of two.
●In Biology & Collective numbers:
A
structure, usually X- or V-shaped,
two
by a centromere.
●In Mathematics & Collective numbers: