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pineal gland

(Encyclopedia)pineal gland pĭnˈeəl [key], small organ (about the size of a pea) situated in the brain. Long considered vestigial in humans, the structure, which is also called the pineal body or the epiphysis, i...

stereoscope

(Encyclopedia)stereoscope stĕrˈēəskōpˌ [key], optical instrument that presents to a viewer two slightly differing pictures, one to each eye, to give the effect of depth. In normal vision the two eyes, being a...

neurotransmitter

(Encyclopedia)neurotransmitter, chemical that transmits information across the junction (synapse) that separates one nerve cell (neuron) from another nerve cell or a muscle. Neurotransmitters are stored in the nerv...

Alzheimer's disease

(Encyclopedia)Alzheimer's disease ălsˈhīˌmərz, ôls– [key], degenerative disease of nerve cells in the cerebral cortex that leads to atrophy of the brain and senile dementia and, ultimately, death. The disea...

psychological test

(Encyclopedia)psychological test, any of a variety of testing procedures for measuring psychological traits and behavior, or for studying some specialized aspect of ability. Several forms of testing have arisen fro...

Kahoolawe

(Encyclopedia)Kahoolawe kähōˈōläˈvā, –wā, kähōˈläˈ– [key], uninhabited island, 45 sq mi (117 sq km), central Hawaii; separated from Maui island to the NE by Alalakeiki Channel. The low island, dott...

Cremer, Sir William Randal

(Encyclopedia)Cremer, Sir William Randal krēˈmər [key], 1828–1908, English pacifist. At first active in trade unionism, he gradually expanded his work and interests, becoming one of the most active advocates o...

Farrar, Edgar Howard

(Encyclopedia)Farrar, Edgar Howard fărˈər [key], 1849–1922, American lawyer, b. Concordia, La. He made his home in New Orleans, where he had a large corporation practice. He was active in municipal reform move...

trusteeship, territorial

(Encyclopedia)trusteeship, territorial, system of UN control for territories that were not self-governing. It replaced the mandates of the League of Nations. Provided for under chapters 12 and 13 of the Charter of ...

MacEwen, Sir William

(Encyclopedia)MacEwen, Sir William məkyo͞oˈən [key], 1848–1924, Scottish surgeon. A professor of surgery at the Univ. of Glasgow, he was noted for his work on bone grafting, on the radical cure of hernia, and...