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Prefix 1. New. ( 2. (Organic chemistry) Having a structure, similar to that of neopentane, in which each hydrogen atom of a methyl group has been replaced by an alkyl group. ( 3. A new or revived form of. (Google Dictionary) Prefix origin: From Greek neo-, comb. form of neos “new, young, youthful; fresh, strange; lately, just...

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/ˌnēōˈnātl/ Adjective 1. Of or pertaining to the period of time immediately following birth, or to the newborn. ( 2. of, relating to, or affecting the newborn and especially the human infant during the first month after birth. ( 3. (Pediatrics) Pertaining to the first four weeks after birth. ( Word origin: From Greek neo-, comb. form of neos “new, young, youthful; fresh, strange; lately, just now,” + from Latin natalis “pertaining to birth or origin,” from natus, past participle of nasci “to be...

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Noun 1. The cortical part of the neencephalon. ( 2. The phylogenetically new part of the cerebral cortex that develops from the area between the piriform lobe and the hippocampus, comprises the non-olfactory region of the cortex, and attains its maximum development in humans where it makes up the greater part of the cerebral hemisphere on each side. ( 3. A part of the brain of mammals. It is the outer layer of the cerebral hemispheres, and made up of six layers, labelled I to VI (with VI being the innermost and I being the outermost). It is part of the cerebral cortex (along with the archicortex and paleocortex, which are cortical parts of the limbic system). In all mammals, it is involved in “higher functions” such as sensory perception, generation of motor commands, spatial reasoning, conscious thought and language. ( Syn: neocortex, isocortex Word origin: Latin for “new...

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