phyllidiumn.

Brit.

/fᵻˈlɪdɪəm/, U.S.

/fəˈlɪdiəm/

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ϕύλλον , -idium comb. form.

Etymology: < ancient Greek ϕύλλον leaf (see phyllo- comb. form) + -idium comb. form. With sense (a) perhaps compare slightly earlier phyllidiobranchiate adj. With sense (b) compare later phyllid n.

Zoology and Botany.

Any of various small leaf-like structures in animals or plants; spec. (a) each of the lamellar folds of the mantle that act as gills in certain opisthobranch gastropods lacking ctenidia; (b) a plant part homologous to or resembling a leaf, esp. a phyllid; (c) an appendage of the scolex in certain tapeworms (rare).

ΘΚΠ

the world > plants > part of plant > leaf > [noun] > part analogous to leaf

foliation1658

phylloid1872

phyllidium1890

the world > life > biology > physical aspects or shapes > shape > [noun] > leaf-shaped

leaflet1826

phyllidium1890

1890 Cent. Dict. Phyllidium, one of the rudimentary ctenidia of the phyllidiobranchiate gastropods, as limpets, called by Lankester capitopetal bodies.

1900 B. D. Jackson Gloss. Bot. Terms 195/2 Phyllidium, term proposed by Bower for the homologue of the leaf in the gametophyte.

1911 Science 17 Feb. 273/1 The American form [of a type of cestode worm]..has a scolex of fixed form with primitive suckers or phyllidia.

1958 Chambers's Techn. Dict. 104 Bothridium, in Cestoda, a thin folded flap projecting from the scolex and used as an organ of fixation. Also called phyllidium.

1987 Amer. Jrnl. Bot. 74 1252/1 These plants [sc. mosses] no longer contained functional cells. The cell contents..were missing, and the phyllidia appeared to consist only of cell walls.

1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) v. 383/1 Takakia [sc. a plant related to mosses]..has phyllidia—solid, cylindrical appendages from three- to five-cells thick that arise singly or in twos, threes, or fours in an irregular spiral from an erect shoot of the gametophyte.

2004 Biochem. Systematics & Ecol. 32 135 Along lobe margins and thallus cracks, many species of Peltigera form the so-called phyllidia, small dorsiventral lobes constricted at the base which are easily detached.

This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).

单词	phyllidium
释义	phyllidiumn. Brit. /fᵻˈlɪdɪəm/, U.S. /fəˈlɪdiəm/ Origin: A borrowing from Greek, combined with an English element. Etymons: Greek ϕύλλον , -idium comb. form. Etymology: < ancient Greek ϕύλλον leaf (see phyllo- comb. form) + -idium comb. form. With sense (a) perhaps compare slightly earlier phyllidiobranchiate adj. With sense (b) compare later phyllid n. Zoology and Botany. Any of various small leaf-like structures in animals or plants; spec. (a) each of the lamellar folds of the mantle that act as gills in certain opisthobranch gastropods lacking ctenidia; (b) a plant part homologous to or resembling a leaf, esp. a phyllid; (c) an appendage of the scolex in certain tapeworms (rare). ΘΚΠ the world > plants > part of plant > leaf > [noun] > part analogous to leaf foliation1658 phylloid1872 phyllidium1890 the world > life > biology > physical aspects or shapes > shape > [noun] > leaf-shaped leaflet1826 phyllidium1890 1890 Cent. Dict. Phyllidium, one of the rudimentary ctenidia of the phyllidiobranchiate gastropods, as limpets, called by Lankester capitopetal bodies. 1900 B. D. Jackson Gloss. Bot. Terms 195/2 Phyllidium, term proposed by Bower for the homologue of the leaf in the gametophyte. 1911 Science 17 Feb. 273/1 The American form [of a type of cestode worm]..has a scolex of fixed form with primitive suckers or phyllidia. 1958 Chambers's Techn. Dict. 104 Bothridium, in Cestoda, a thin folded flap projecting from the scolex and used as an organ of fixation. Also called phyllidium. 1987 Amer. Jrnl. Bot. 74 1252/1 These plants [sc. mosses] no longer contained functional cells. The cell contents..were missing, and the phyllidia appeared to consist only of cell walls. 1998 L. Margulis & K. V. Schwartz Five Kingdoms (ed. 3) v. 383/1 Takakia [sc. a plant related to mosses]..has phyllidia—solid, cylindrical appendages from three- to five-cells thick that arise singly or in twos, threes, or fours in an irregular spiral from an erect shoot of the gametophyte. 2004 Biochem. Systematics & Ecol. 32 135 Along lobe margins and thallus cracks, many species of Peltigera form the so-called phyllidia, small dorsiventral lobes constricted at the base which are easily detached. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < n.1890
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