To add a second signature to a document, affirming the validity of the signature of another person.
To sign on the opposite side of (a document).
A second signature added to a document to affirm the validity of the signature of the first person.
The response to a sign or signal.
To acknowledge the existence or legality of; to treat as valid or worthy of consideration.
To match (something or someone which one currently perceives) to a memory of some previous encounter with the same person or thing.
To realize or discover the nature of something; apprehend quality in.
To show formal appreciation of, as with an award, commendation etc.
to cognize again
To have the property to bind to specific antigens.
To acknowledge or consider (as being a certain thing or having a certain quality or property).