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