To give off (gas, such as oxygen or carbon dioxide during a reaction).
To change; transform.
Of a population, to acquire or develop (a trait) in the process of biological evolution.
To move in regular procession through a system.
To come into being; develop.
Of a trait, to develop within a population via biological evolution.
Of a population, to change genetic composition over successive generations through the process of evolution.
To cause something to change or transform.
To make (an animal or person) unconscious or cause (an animal or person) death by preventing breathing; to smother, to suffocate.
To prevent (a breath, cough, or cry, or the voice, etc.) from being released from the throat.
To make (something) unable to be heard by blocking it with some medium.
To prevent (something) from being revealed; to conceal, to hide, to suppress.
To cause (someone) difficulty in breathing, or a choking or gagging feeling.
To feel smothered; to find it difficult to breathe.
To cause (a dog, horse, or other four-legged mammal) to dislocate or sprain its stifle joint.
To die of suffocation.
To keep in, hold back, or repress (something).
To treat (a silkworm cocoon) with steam as part of the process of silk production.
An act or state of being stifled.
A bone disease of this region.
The joint between the femur and tibia in the hind leg of various four-legged mammals, especially horses, corresponding to the knee in humans.