Definition: A unit used to measure the brightness of light as it affects the human eye, adjusted for the size of the pupil.

Example: The brightness of the display was measured in trolands to ensure it was comfortable for viewing.

Definition: A natural mineral that is gray or white, made of sodium carbonate and used for producing sodium compounds.

Example: Trona is often mined for its sodium content, which is important in various industrial processes.

Definition: A process where social insects, like bees or ants, share food by exchanging liquids, often through regurgitation, to feed each other and their larvae.

Example: During the summer, bees engage in trophallaxis to ensure all members of the hive receive nourishment.

Definition: Relating to the way organisms obtain food and nutrients, especially in the context of their relationships in a food chain.

Example: The trophic levels in the ecosystem show how energy is transferred from one organism to another.

Definition: The outer layer of cells in a developing embryo that helps attach it to the uterus and provides nutrients.

Example: The trophoblast plays a crucial role in the early stages of pregnancy by forming the placenta.

Definition: Relating to a layer of cells that forms the outer layer of a developing embryo and helps in the formation of the placenta.

Example: The trophoblastic cells play a crucial role in the implantation of the embryo.

Definition: A type of single-celled organism that is in the active stage of its life cycle, often found in the class of protozoans.

Example: The scientist observed the trophozoite under the microscope to study its behavior.

Definition: A type of hormone that is produced by an endocrine gland and affects the function of another gland.

Example: The doctor explained how tropins regulate various bodily functions by influencing other glands.

Definition: A white, crystalline substance that is toxic and is derived mainly from another compound called atropine.

Example: Tropine is used in some chemical research due to its unique properties.

Definition: A movement or growth of a living organism in response to an external stimulus, like light or gravity.

Example: Plants exhibit phototropism by bending towards the light.