Definition of abstruse
- the abstruse calculations of mathematicians
- abstruse concepts/ideas/theories
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Her subject matter is abstruse.
you're not the only one who finds Einstein's theory of relativity abstruse
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'abstruse.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Look closely at the following Latin verbs, all of which are derived from the verb "trudere" ("to push"): "extrudere," "intrudere," "obtrudere," "protrudere." Each of these Latin verbs has an English descendant whose meaning involves pushing or thrusting. Another "trudere" offspring, abstrudere, meaning "to push away" or "to conceal," gave English abstrude, meaning "to thrust away." But that verb didn't make it past the 17th century. The "abstrudere" descendant that did survive is "abstruse," an adjective that recalls the meaning of its Latin parent abstrusus, meaning "concealed."
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