calamiticadj.

Brit.

/ˌkaləˈmɪtɪk/, U.S.

/ˌkæləˈmɪdɪk/

Origin: Formed within English, by derivation. Etymons: calamite n., -ic suffix.

Etymology: < calamite n. + -ic suffix. In sense 2 after French calamitique (J. Billard et al. 1978, in Nouveau jrnl. de chimie 2 540/1).

1. Palaeontology. Characteristic of or resembling fossil plants of the genus Calamites (cf. calamite n. 1), which had distinctive grooved and jointed stems. Now rare.

ΘΚΠ

the world > plants > particular plants > plants and herbs > fossil plants > [adjective]

stigmarian1855

Mesophytic1880

calamitic1883

calamitean1895

Bennettitalean1917

parichnos1969

stigmarioid-

1883 Ann. & Mag. Nat. Hist. 11 314 (caption) Fruit..showing a perfect spike composed of eight segments attached to a calamitic stem.

1897 Amer. Naturalist 31 44 Pseudobornia appears..to be Calamitic in its nature.

1946 S. O'Casey Drums under Windows 210 Great masses of horsetails, huge calamitic Mishelaymassmores towering sky-high.

1969 R. Crookall Fossil Plants Carboniferous Rocks Great Brit.: 2nd Sect. 620 In a few cases only can the foliage and fructifications be correlated with calamitic stems.

2. Physical Chemistry. Designating a mesophase or liquid crystal consisting of cylindrical or rodlike molecules, or the molecules themselves.

ΚΠ

1980 Inorganica Chimica Acta 40 x33/1 Molecules exhibiting dissimilar forms (calamitic and globular, calamitic and disk-like, globular and discotic) are totally miscible in the liquid phase.

1994 New Scientist 19 Mar. 18/1 Liquid crystals are fluids that retain some of the order of solids because their molecules are either rod-like (calamitic) or disc-like (discotic).

2007 Philos. Trans. (Royal Soc.) A. 365 1558 Another common calamitic liquid crystal phase is the smectic phase, in which the centre of mass of the constituent molecules is arranged in layered structures.

This is a new entry (OED Third Edition, December 2013; most recently modified version published online December 2021).

单词	calamitic
释义	calamiticadj. Brit. /ˌkaləˈmɪtɪk/, U.S. /ˌkæləˈmɪdɪk/ Origin: Formed within English, by derivation. Etymons: calamite n., -ic suffix. Etymology: < calamite n. + -ic suffix. In sense 2 after French calamitique (J. Billard et al. 1978, in Nouveau jrnl. de chimie 2 540/1). 1. Palaeontology. Characteristic of or resembling fossil plants of the genus Calamites (cf. calamite n. 1), which had distinctive grooved and jointed stems. Now rare. ΘΚΠ the world > plants > particular plants > plants and herbs > fossil plants > [adjective] stigmarian1855 Mesophytic1880 calamitic1883 calamitean1895 Bennettitalean1917 parichnos1969 stigmarioid- 1883 Ann. & Mag. Nat. Hist. 11 314 (caption) Fruit..showing a perfect spike composed of eight segments attached to a calamitic stem. 1897 Amer. Naturalist 31 44 Pseudobornia appears..to be Calamitic in its nature. 1946 S. O'Casey Drums under Windows 210 Great masses of horsetails, huge calamitic Mishelaymassmores towering sky-high. 1969 R. Crookall Fossil Plants Carboniferous Rocks Great Brit.: 2nd Sect. 620 In a few cases only can the foliage and fructifications be correlated with calamitic stems. 2. Physical Chemistry. Designating a mesophase or liquid crystal consisting of cylindrical or rodlike molecules, or the molecules themselves. ΚΠ 1980 Inorganica Chimica Acta 40 x33/1 Molecules exhibiting dissimilar forms (calamitic and globular, calamitic and disk-like, globular and discotic) are totally miscible in the liquid phase. 1994 New Scientist 19 Mar. 18/1 Liquid crystals are fluids that retain some of the order of solids because their molecules are either rod-like (calamitic) or disc-like (discotic). 2007 Philos. Trans. (Royal Soc.) A. 365 1558 Another common calamitic liquid crystal phase is the smectic phase, in which the centre of mass of the constituent molecules is arranged in layered structures. This is a new entry (OED Third Edition, December 2013; most recently modified version published online December 2021). < adj.1883
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