Outlines of evolutionary biology / by Arthur Dendy, with glossary of technical terms.

  • Arthur Dendy
Date:
1923
Catalogue details

Licence: In copyright

Credit: Outlines of evolutionary biology / by Arthur Dendy, with glossary of technical terms. Source: Wellcome Collection.

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    Metabolism (Gr. pera/3oA?/, change), the sum total of the chemical processes which go on in the living body. Metacarpals (Gr. perd, next after; Kapiros, wrist), the bones in the palm of the hand. Metagenesis (Gr. pera-, expressing change ; ye'veors, birth), the alternation of sexual and asexual generations. Metameric (Gr. perd, next after; pe'po?, portion), a term applied to a type of segmentation in which the similar parts (metameres) of which the body is composed follow after one another in longitudinal series. Metamorphic (Gr. per a-, expressing change; pop0?g form), a term applied to rocks which have undergone extensive changes since they were laid down. Metamorphosis (Gr. perapo'p(/>om9, transformation), a more or less abrupt change from one stage of development to another Metapodials (Gr. perd, next after; irovs, foot), a collective term for metacarpals and metatarsals. Metatarsals (Gr. perd, next after; rapaos, foot [ankle]), the hones of the instep. Microgametes (Gr. pi/cpos, small; yaperps, spouse), the small (male) gametes, where the latter are differentiated into two sizes. Microlecithal (Gr. pi/cpoy, small; XimOos, yolk), a term applied to eggs with little yolk. Micronucleus (Gr. pi»cpdy, small; Lat. nucleus, kernel), the smaller (germ) nucleus in Paramcecium, &c. Micropyle (Gr. pispos, small; nvAp, gate), a small opening in the integuments of an ovule, through which the pollen tube usually enters. Microsporangium (Gr. pu<p6s, small; sporangium), a small sporan¬ gium, in cases where the latter are differentiated into two sizes. Microspore (Gr. pncpos, small; a-nopos, seed), a small spore, in cases where large and small are produced. Microzooid (Gr. piKpos, small; (<yov, a living thing ; elSos, form), a small individual, in unicellular organisms in which two sizes occur. Miocene (Gr. peiW, less; kcuvos, recent), one of the subdivisions of the cainozoic era of the earth’s history. Mitosis (Gr. plro$, thread), the changes undergone by the nucleus in typical cases of nuclear division, in which various thread¬ like structures appear.
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