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| a scrap or morsel of food left at a meal. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
niche (nĭch, nēsh)
n.
An eroded or ulcerated area detected by contrast radiography.
The function or position of an organism or a population within an ecological community.
The particular area within a habitat occupied by an organism.
| niche (nĭch, nēsh) Pronunciation Key
The function or position of a species within an ecological community. A species's niche includes the physical environment to which it has become adapted as well as its role as producer and consumer of food resources. See also competitive exclusion principle. |