Excretion
[ik-skree-shuh n] /ɪkˈskri ʃən/
noun
1.
the act of .
2.
the substance , as urine or sweat, or certain plant products.
[ik-skree-shuh n] /ɪkˈskri ʃən/
noun
1.
the state of being excrescent.
2.
an excrescence.
n.
c.1600, from French excrétion (16c.), from Latin excretionem, noun of action from past participle stem of excernere “to discharge” (see excrement).
excretion ex·cre·tion (ĭk-skrē’shən)
n.
excretion
(ĭk-skrē’shən)
The elimination by an organism of waste products that result from metabolic processes. In plants, waste is minimal and is eliminated primarily by diffusion to the outside environment. Animals have specific organs of excretion. In vertebrates, the kidney filters blood, conserving water and producing urea and other waste products in the form of urine. The urine is then passed through the ureters to the bladder and discharged through the urethra. The skin and lungs, which eliminate carbon dioxide, are also excretory organs.
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- Excretory
[ek-skri-tawr-ee, -tohr-ee, ik-skree-tuh-ree] /ˈɛk skrɪˌtɔr i, -ˌtoʊr i, ɪkˈskri tə ri/ adjective 1. pertaining to or concerned in excretion; having the function of : excretory organs. adj. 1680s, from excrete + -ory. excretory ex·cre·to·ry (ěk’skrĭ-tôr’ē) adj. Of, relating to, or used in excretion.
- Excretory duct
excretory duct n. Any of the various ducts carrying secretion from a gland or fluid from a reservoir.
- Excretory ductule of lacrimal gland
excretory ductule of lacrimal gland n. Any of the ductules that open into the superior fornix of the conjunctival sac.
- Excretory gland
excretory gland n. A gland separating waste material from the blood.
- Excretory system
excretory system [(ek-skruh-tawr-ee)] The systems that excrete wastes from the body. For example, the system of organs that regulates the amount of water in the body and filters and eliminates from the blood the wastes produced by metabolism. The principal organs of the excretory system are the kidneys, ureters, urethra, and urinary bladder.