merithallusn.

Brit.

/ˌmɛrᵻˈθaləs/, U.S.

/ˌmɛrəˈθæləs/

Inflections: Plural merithalli.

Origin: A borrowing from Greek, combined with an English element; modelled on a French lexical item. Etymons: Greek μερίς , thallus n.

Etymology: Irregularly < ancient Greek μερίς part (see note s.v. mero- comb. form¹) + thallus n., after French mérithalle merithal n.

Botany. Now rare and historical.

1. In early theories of plant structure, esp. those of C. Gaudichaud-Beaupré (1789–1854): each of three units into which a leaf, or a phyton (see phyton n.), was regarded as divisible.Distinguished as radicular, cauline, and foliar.

ΚΠ

1849 J. H. Balfour Man. Bot. §639 Each of the individuals forming a compound plant is called by Gaudichaud a phyton.., and in it he recognizes three parts or merithalli.

1951 R. C. McLean & W. R. Ivimey-Cook Textbk. Theoret. Bot. I. xvi. 653 He [sc. Delpino] described the stem as pseudaxis or phyllopodium and the unit components as merithalli.

†2. An internode. Obsolete.

ΚΠ

1856 J. S. Henslow Dict. Bot. Terms (new ed.) 107 Merithallus, synonyme for Internodium.

This is a new entry (OED Third Edition, September 2001; most recently modified version published online March 2022).

单词	merithallus
释义	merithallusn. Brit. /ˌmɛrᵻˈθaləs/, U.S. /ˌmɛrəˈθæləs/ Inflections: Plural merithalli. Origin: A borrowing from Greek, combined with an English element; modelled on a French lexical item. Etymons: Greek μερίς , thallus n. Etymology: Irregularly < ancient Greek μερίς part (see note s.v. mero- comb. form¹) + thallus n., after French mérithalle merithal n. Botany. Now rare and historical. 1. In early theories of plant structure, esp. those of C. Gaudichaud-Beaupré (1789–1854): each of three units into which a leaf, or a phyton (see phyton n.), was regarded as divisible.Distinguished as radicular, cauline, and foliar. ΚΠ 1849 J. H. Balfour Man. Bot. §639 Each of the individuals forming a compound plant is called by Gaudichaud a phyton.., and in it he recognizes three parts or merithalli. 1951 R. C. McLean & W. R. Ivimey-Cook Textbk. Theoret. Bot. I. xvi. 653 He [sc. Delpino] described the stem as pseudaxis or phyllopodium and the unit components as merithalli. †2. An internode. Obsolete. ΚΠ 1856 J. S. Henslow Dict. Bot. Terms (new ed.) 107 Merithallus, synonyme for Internodium. This is a new entry (OED Third Edition, September 2001; most recently modified version published online March 2022). < n.1849
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