monotropyn.

Brit.

/mɒˈnɒtrəpi/,

/məˈnɒtrəpi/, U.S.

/məˈnɑtrəpi/

Origin: Formed within English, by compounding. Etymons: mono- comb. form, -tropy comb. form.

Etymology: < mono- comb. form + -tropy comb. form. In sense 2 after German Monotropie (O. Lehmann Molekularphysik (1888) I. 119). In sense 3 after German monotrop, adjective (see monotropic adj.). With senses 2 and 3 compare earlier monotropic adj.

†1. Biology. The property of exhibiting homogeneity in one direction only (see quot.); = monotropism n. 1. Obsolete. rare.

ΚΠ

1895 J. A. Ryder in Biol. Lect. 1894 38 The completest homogeneity is found to occur in only one direction in parallel lines extending through the mass. This condition we may designate as monotropy.

2. Physical Chemistry. The existence of two polymorphs of a substance, one of which is stable and the other metastable over the whole range of their existence, so that conversion of the latter into the former can occur but not vice versa.

ΘΚΠ

the world > matter > chemistry > polymorphism > [noun] > monotropy

monotropy1902

monotropism1924

1902 A. Findlay tr. W. Ostwald Princ. Inorg. Chem. 255 (heading) Enantiotropy and monotropy.

1932 J. N. Friend Text-bk. Physical Chem. I. xi. 181 It may..so happen that, in certain cases of presumed monotropy, the transition point lies very much below the melting point and has not been realised experimentally for this reason.

1970 S. N. Chakravarti & N. C. Mitra Textbk. Physical Chem. I. vi. 232 Examples of monotropy are white and violet phosphorus, diamond and graphite, silica, iodine monochloride [and] α- and β-benzophenone.

1995 Pharmaceut. Res. 12 1453 The monotropy of the α-form was ascertained over the explored temperature range at ordinary pressure.

3. Ecology. The condition (in a pollinator) of being monotropic (monotropic adj. 3).

ΚΠ

1925 Ecology 6 412 The three forms [of heterotropy] are oligotropy, monotropy, and polytropy.

1971 K. Faegri & L. van der Pijl Princ. Pollination Ecol. (ed. 2) v. 58 Monotropy has been found in other primitive pollinators.

1994 Proc. National Acad. Sci. U.S.A. 91 6/2 Monotropy and oligotropy obviously channel pollen distribution within taxonomic limits in a plant community.

This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022).

单词	monotropy
释义	monotropyn. Brit. /mɒˈnɒtrəpi/, /məˈnɒtrəpi/, U.S. /məˈnɑtrəpi/ Origin: Formed within English, by compounding. Etymons: mono- comb. form, -tropy comb. form. Etymology: < mono- comb. form + -tropy comb. form. In sense 2 after German Monotropie (O. Lehmann Molekularphysik (1888) I. 119). In sense 3 after German monotrop, adjective (see monotropic adj.). With senses 2 and 3 compare earlier monotropic adj. †1. Biology. The property of exhibiting homogeneity in one direction only (see quot.); = monotropism n. 1. Obsolete. rare. ΚΠ 1895 J. A. Ryder in Biol. Lect. 1894 38 The completest homogeneity is found to occur in only one direction in parallel lines extending through the mass. This condition we may designate as monotropy. 2. Physical Chemistry. The existence of two polymorphs of a substance, one of which is stable and the other metastable over the whole range of their existence, so that conversion of the latter into the former can occur but not vice versa. ΘΚΠ the world > matter > chemistry > polymorphism > [noun] > monotropy monotropy1902 monotropism1924 1902 A. Findlay tr. W. Ostwald Princ. Inorg. Chem. 255 (heading) Enantiotropy and monotropy. 1932 J. N. Friend Text-bk. Physical Chem. I. xi. 181 It may..so happen that, in certain cases of presumed monotropy, the transition point lies very much below the melting point and has not been realised experimentally for this reason. 1970 S. N. Chakravarti & N. C. Mitra Textbk. Physical Chem. I. vi. 232 Examples of monotropy are white and violet phosphorus, diamond and graphite, silica, iodine monochloride [and] α- and β-benzophenone. 1995 Pharmaceut. Res. 12 1453 The monotropy of the α-form was ascertained over the explored temperature range at ordinary pressure. 3. Ecology. The condition (in a pollinator) of being monotropic (monotropic adj. 3). ΚΠ 1925 Ecology 6 412 The three forms [of heterotropy] are oligotropy, monotropy, and polytropy. 1971 K. Faegri & L. van der Pijl Princ. Pollination Ecol. (ed. 2) v. 58 Monotropy has been found in other primitive pollinators. 1994 Proc. National Acad. Sci. U.S.A. 91 6/2 Monotropy and oligotropy obviously channel pollen distribution within taxonomic limits in a plant community. This entry has been updated (OED Third Edition, December 2002; most recently modified version published online March 2022). < n.1895
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