Merriam-Webster's Collegiate® Dictionary, 11th Edition
THINK
I. verb (thought; thinking) see: thanks Date: before 12th century transitive verb to form or have in the mind, to have as an intention ,
3. to have as an opinion , to regard as ; consider ,
4. to reflect on ; ponder , to determine by reflecting , to call to mind ; remember , to devise by thinking, to have as an expectation ; anticipate ,
8. to center one's thoughts on , to form a mental picture of, to subject to the processes of logical thought , intransitive verb
1. to exercise the powers of judgment, conception, or inference ; reason , to have in the mind or call to mind a thought,
2. to have the mind engaged in reflection ; meditate , to consider the suitability , to have a view or opinion , to have concern, to consider something likely ; suspect , thinker noun Synonyms: see: think Synonyms: see: think
II. noun
Date: 1834
an act of thinking ,
III. adjective
Date: 1892
relating to, requiring, or stimulating thinking