The meaning of FIN is an external membranous process of an aquatic animal (such as a fish) used in propelling or guiding the body.

FIN meaning: 1. a thin vertical part sticking out of the body of especially a fish or an aircraft that helps…. Learn more.

A fin is the part of a fish's body that protrudes into the water and helps it balance and move in various directions. Sharks use their dorsal fins to stabilize their bodies as they propel through the water. Fish, whales, dolphins, and other aquatic animals have fins on various parts of their bodies.

Sep 20, 2023 · What Does Fin Mean? The term fin is a slang abbreviation for the word “finish.” It is commonly used online and in text messaging to indicate that you have completed something. The word “finish” originated from Latin words meaning “to …

A fin is a plate or other object which is attached to a surface in order to improve the flow of heat. The tubes may be fitted with fins to increase the heat transfer surface. The use of fins is recognized as an effective method of increasing the heat transfer from a surface.

FIN meaning: 1 : a thin flat part that sticks out from the body of a fish and is used in moving or guiding the fish through water; 2 : a part on a machine (such as a car or airplane) that is shaped like a fish's fin

Definition of fin noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.