metakinesisn.
/ˌmɛtəkᵻˈniːsɪs/, /ˌmɛtəkʌɪˈniːsɪs/, U.S. /ˈˌmɛdəkəˈnisᵻs/, /ˈˌmɛdəˌkaɪˈnisᵻs/ 1. Biology.
a. The separation of sister chromatids and their movement to opposite poles in anaphase of mitosis. Now rare and historical.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > [noun] > stages of mitosis or meiosis > separation of chromatids
metakinesis1887
postreduction1934
prereduction1934
1887 Amer. Naturalist 21 142 Metakinesis refers to the changes that take place after the splitting of the loops or microsomata to form the chromatin figures which are to occupy the daughter-nuclei.
1899 Jrnl. Royal Microsc. Soc. 168 After the longitudinal segmentation of the chromosomes..the daughter chromosomes are gradually pulled apart... This stage is known as metakinesis.
1903 Bot. Gaz. 35 251 Heuser..interpreted the separation of the daughter segments during metakinesis of the first mitosis as a transverse division.
1968 R. Rieger et al. Gloss. Genetics & Cytogenetics 286 Metakinesis, 1. the separation of the two chromatids of each chromosome and their movement to opposite spindle poles..during anaphase of mitosis (Flemming 1879).
b. The movement of chromosomes to the spindle equator early in metaphase of mitosis.
ΘΚΠ
the world > life > biology > biological processes > genetic activity > [noun] > other processes in mitosis or meiosis
zonation1899
diakinesis1902
parasynapsis1909
syndesis1909
parasyndesis1911
non-disjunction1913
non-conjunction1925
asynapsis1930
stathmokinesis1938
misdivision1939
metakinesis1948
tandem duplication1959
1948 W. Andrew tr. E. D. P. de Robertis Gen. Cytol. viii. 182 When the nuclear membrane has disintegrated, a more fluid zone is noted in the center of the cell in which the chromosomes..begin to be displaced in apparent disorder toward the equator. This mechanism of equatorial arrangement was called metakinesis (Wassermann).
1968 R. Rieger et al. Gloss. Genetics & Cytogenetics 286 Metakinesis, 2. chromosome congression to the spindle equator.
1980 European Jrnl. Cell Biol. 22 687 These microfilaments may constitute one structural component of the traction apparatus that moves chromosomes during metakinesis and anaphase.
1992 Jrnl. Cell Sci. 103 125 To examine the relative roles of chromosomes, spindle poles and microtubules in the formation of the metaphase spindle and metakinesis, I have experimentally placed an extra centrosome-free pronucleus close to a forming bipolar spindle in a living cell.
2. Mental action or awareness; a conscious phenomenon or occurrence. Cf. metakinetic adj. 1. Now rare.
ΘΚΠ
the world > the supernatural > the paranormal > [noun] > manifestation of consciousness or mental phenomena
metakinesis1890
1890 C. L. Morgan Animal Life & Intell. xii. 467 We call manifestations of energy ‘kinetic’ manifestations, and we use the term ‘kinesis’ for physical manifestations of this order. Similarly, we may call concomitant manifestations of the mental or conscious order ‘metakinetic’, and may use the term ‘metakinesis’ for all manifestations belonging to this phenomenal order.
1890 C. L. Morgan Animal Life & Intell. xii. 488 When, in man, the metakineses associated with these neural kineses assume the form of hypotheses, theories, interpretations of nature, moral ideals, and religious conceptions, these are..no longer subject to the law of natural selection.
1892 K. Pearson Gram. of Sci. ix. 401 This metakinesis does not appear to be more than a metaphysical name for non-conscious life.
1903 L. F. Ward Pure Sociol. 156 Morgan's metakinetic energy is therefore the same as my conative energy or form of causation, and the difference between kinesis and metakinesis is the difference between motion produced by physical or ordinary efficient causes and motion produced by psychic or conative causes.
3. Biology. The property of being metakinetic (metakinetic adj. 3). Cf. earlier metakinetism n.
ΚΠ
1962 Jrnl. Morphol. 111 316/1 Metakinesis, the presence of a movable joint between the supraoccipital and parietal bones.
1984 Philos. Trans. (Royal Soc.) B. 306 501 A massively ossified braincase and associated absence of metakinesis are only characteristic of more derived embolomeres.
1999 Jrnl. Exper. Biol. 202 3687 The skull of these geckoes showed the three types of kinesis described by Versluys at the beginning of this century: streptostyly, mesokinesis and metakinesis.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1887