verb

• (transitive) To match (something or someone which one currently perceives) to a memory of some previous encounter with the same person or thing.
• (transitive) To acknowledge the existence or legality of; to treat as valid or worthy of consideration.
• (transitive, or with clause) To acknowledge or consider (as being a certain thing or having a certain quality or property).
• (transitive) To realize or discover the nature of something; apprehend quality in.
• (transitive) To show formal appreciation of, as with an award, commendation etc.
• (obsolete) To review; to examine again.
• (obsolete) To reconnoiter.
• (immunology) To have the property to bind to specific antigens.
• to cognize again