part of an organism consisting of an aggregate of cells having a similar structure and function
"The microscope revealed that the muscle tissue contracted rapidly when stimulated by electricity."
a soft thin (usually translucent) paper
"She blew her nose gently into a tissue before leaving the restaurant."
Thin, woven, gauze-like fabric.
"She gently dabbed his forehead with a strip of sterile tissue to cool him down after the fever spike."
In plain English: A tissue is a soft, thin piece of paper used for wiping up spills or blowing your nose.
"She wiped her nose with a tissue."
To form tissue of; to interweave.
"The skilled weaver carefully wove strips of gold thread into the fabric to create a rich, shimmering pattern."
In plain English: To tissue something is to cover it with thin paper towels to soak up liquid.
"The nurse asked him to tissue his nose because he was sneezing loudly."
Usage: Use this verb when describing biological cells forming structures or fabrics being woven together, rather than the more common noun meaning paper products. Avoid using it in casual conversation where you simply mean a facial wipe.
The word tissue comes from the Old French word for "woven." It entered English via Middle English, originally describing fabric made by weaving threads together.