(uncountable) The mental activity or process of grasping with the intellect; apprehension by the mind; understanding. / (countable) A particular act of grasping by means of the intellect.

plural of intellection

(uncountable) The faculty of thinking, judging, abstract reasoning, and conceptual understanding; the cognitive faculty. / (uncountable) The capacity of that faculty (in a particular person).

plural of intellect

Of, related to, or caused by the intellect. / Having the capacity to reason and understand.

In an intellective manner.

Endowed with intellect; having intellectual capacities or powers.