assertion

[uh-sur-shuh n] /əˈsɜr ʃən/
noun
1.
a positive statement or declaration, often without support or reason:
a mere assertion; an unwarranted assertion.
2.
an act of asserting.
Origin
1375-1425; late Middle English assercion < Latin assertiōn- (stem of assertiō). See assert, -ion
Related forms
assertional, adjective
misassertion, noun
nonassertion, noun
overassertion, noun
reassertion, noun
superassertion, noun
Synonyms
1. claim, contention, allegation.
British Dictionary definitions for assertions

assertion

/əˈsɜːʃən/
noun
1.
a positive statement, usually made without an attempt at furnishing evidence
2.
the act of asserting
Word Origin and History for assertions

assertion

n.

early 15c., assercioun, from Middle French assertion (14c.) or directly from Late Latin assertionem (nominative assertio), noun of action from past participle stem of Latin asserere "claim rights over something, state, maintain, affirm," from ad- "to" (see ad-) + serere "join" (see series). By "joining oneself" to a particular view, one "claimed" or "maintained" it.