imagine

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To form a mental picture or image of.
2. v. To think; conjecture: I imagine you're right.
3. v. To have a notion of or about without adequate foundation; fancy: She imagines herself to be a true artist.
4. v. To employ the imagination.
5. v. To make a guess; conjecture.

Century Dictionary and Cyclopedia

1. To form a mental image of; produce by the imagination; especially, to construct by the productive imagination.
2. To conceive in the mind; suppose; conjecture.
3. To contrive in purpose; scheme; devise.
4. = Syn. 1 and 2. Surmise, Guess, etc. (see conjecture), fancy, picture to one's self, apprehend, believe, suppose, deem. —3. To plan, frame. scheme.
5. To form images or conceptions; exercise imagination.
6. To suppose; fancy; think.

Wiktionary

1. v. To form a mental image of something; to envision or create something in one's mind.
2. v. To believe in something created by one's own mind.
3. v. To assume.
4. v. To conjecture or guess.
5. v. To use one's imagination.
6. v. To guess or conjecture.

GNU Webster's 1913

1. v. To form in the mind a notion or idea of; to form a mental image of; to conceive; to produce by the imagination.
2. v. To contrive in purpose; to scheme; to devise; to compass; to purpose. See Compass, v. t., 5.
3. v. To represent to one's self; to think; to believe.
4. v. To form images or conceptions; to conceive; to devise.
5. v. To think; to suppose.

WordNet 3.0

1. v. expect, believe, or suppose
2. v. form a mental image of something that is not present or that is not the case