Anovular: Not accompanied by ovulation, the release of an ovum (egg) from the ovary. Synonymous with anovulatory.
- Anovular menstruation
Anovular menstruation: Menstruation without ovulation. The egg stays within the ovary and usually disintegrates but sometimes it is fertilized, resulting in a life-threatening pregnancy within the ovary.
Anovulatory: Not accompanied by ovulation, the release of an ovum (egg) from the ovary. For example, anovulatory menstruation. Synonymous with anovular.
Anoxia: The absence, or near absence, of oxygen. Anoxia can injure tissues of the body.
- Ant, fire
Ant, fire: Originally from South America, a red or yellowish ant of small to medium size that has a severe sting that burns like fire. The sting of a fire ant causes a pustule to form within 24 hours that takes several days to resolve. Fire ant toxin can trigger an allergic reaction, particularly in […]
Antagonist: A substance that acts against and blocks an action. Antagonist is the opposite of agonist. Antagonists and agonists are key players in the chemistry of the human body and in pharmacology.