[ tɔ:'tɒlədʒi ]
■ noun ( plural tautologies )
1》 the unnecessary repetition within a statement of the same thing in different words.
2》 Logic a statement that is true by necessity or by virtue of its logical form.
Derivatives
tautological adjective
tautologically adverb
tautologist noun
tautologize or tautologise verb
tautologous adjective
Origin
C16: via late L. from Gk, from tautologos 'repeating what has been said', from tauto- 'same' + -logos (see -logy ).