Definition of “thinking” - Learner’s Dictionary

thinking

noun [ U ] uk us /ˈθɪŋkɪŋ/
CONSIDER

the use of your mind to consider something:

This problem requires careful thinking.
OPINION

someone's ideas or opinions:

The book discusses the impact of Christian thinking on western society.
→ See also wishful thinking

(Definition of “thinking” from the Cambridge Learner's Dictionary © Cambridge University Press)