protopodn.adj.

Brit.

/ˈprəʊtə(ʊ)pɒd/, U.S.

/ˈproʊdəˌpɑd/

Origin: Formed within English, by compounding. Etymons: proto- comb. form, -pod comb. form.

Etymology: < proto- comb. form + -pod comb. form.With sense A. 1 compare earlier protopodite n. In sense B. after Italian protopodo (A. Berlese 1913, in Redia 9 127).

A. n.

1. Zoology. = protopodite n.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > member of > parts of > limb having joints > first or basal joint of limb

protopodite1859

protopod1883

1883 Science 26 Oct. 572/2 ‘Protopodite’ and ‘protopod’ are already in use for parts of crustacean appendages.

1947 Amer. Midland Naturalist 37 654 The number of segments in the principal parts of the crustacean limb (protopod, exopod and endopod) is variable among Crustacea.

1998 G. Boxshall in R. Fortey & R. H. Thomas Arthropod Relationships xiii. 166/1 Even with the best-preserved Cambrian fossils it is still difficult to homologize the components of the protopods of their limbs with those of extant crustaceans.

2. Cell Biology. A cytoplasmic process involved in locomotion extending from the front of certain cells. Cf. lamellipodium n.

ΘΚΠ

the world > life > biology > substance > cell > parts of cell > [noun] > processes or extensions

neuraxon1894

neurodendron1895

side chain1898

ruffle1931

stereo-cilium1933

lamellipodium1970

protopod1976

1976 Blood Cells 2 367 All leukocytes have, during locomotion, an anterior fringe (the protopod) and a tail portion (the uropod).

1982 Jrnl. Cell Biol. 95 961/1 The..cytoplasmic fragments..resembled the hyaloplasm..of intact cells, which is especially prominent in the protopod (leading front, lamellipodium) of migrating leukocytes.

2001 Ultramicroscopy 89 266/1 Hepatic natural killer (NK) cells, also called pit cells, move along a substratum with a leading protopod, containing an actin-rich cytoplasm.

B. adj.

Entomology. Designating or relating to an embryonic or larval insect lacking abdominal segmentation and limbs, typical of certain parasitic hymenopterans.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > eggs or young > [adjective] > of young > of larva > lacking abdominal segmentation and limbs

protopod1925

1925 A. D. Imms Gen. Textbk. Entomol. 179 In the protopod phase metamerism is incomplete, the abdomen being imperfectly differentiated.

1969 R. F. Chapman Insects xx. 400 Among the parasitic Hymenoptera the first instar larva hatches as a type known as a protopod larva.

2001 A. Prakash Laboratory Man. Entomol. v. 58 Protopod larvae are seen in families Platygasteridae, Dryinidae and Scelionidae.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	protopod
释义	protopodn.adj. Brit. /ˈprəʊtə(ʊ)pɒd/, U.S. /ˈproʊdəˌpɑd/ Origin: Formed within English, by compounding. Etymons: proto- comb. form, -pod comb. form. Etymology: < proto- comb. form + -pod comb. form.With sense A. 1 compare earlier protopodite n. In sense B. after Italian protopodo (A. Berlese 1913, in Redia 9 127). A. n. 1. Zoology. = protopodite n. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > member of > parts of > limb having joints > first or basal joint of limb protopodite1859 protopod1883 1883 Science 26 Oct. 572/2 ‘Protopodite’ and ‘protopod’ are already in use for parts of crustacean appendages. 1947 Amer. Midland Naturalist 37 654 The number of segments in the principal parts of the crustacean limb (protopod, exopod and endopod) is variable among Crustacea. 1998 G. Boxshall in R. Fortey & R. H. Thomas Arthropod Relationships xiii. 166/1 Even with the best-preserved Cambrian fossils it is still difficult to homologize the components of the protopods of their limbs with those of extant crustaceans. 2. Cell Biology. A cytoplasmic process involved in locomotion extending from the front of certain cells. Cf. lamellipodium n. ΘΚΠ the world > life > biology > substance > cell > parts of cell > [noun] > processes or extensions neuraxon1894 neurodendron1895 side chain1898 ruffle1931 stereo-cilium1933 lamellipodium1970 protopod1976 1976 Blood Cells 2 367 All leukocytes have, during locomotion, an anterior fringe (the protopod) and a tail portion (the uropod). 1982 Jrnl. Cell Biol. 95 961/1 The..cytoplasmic fragments..resembled the hyaloplasm..of intact cells, which is especially prominent in the protopod (leading front, lamellipodium) of migrating leukocytes. 2001 Ultramicroscopy 89 266/1 Hepatic natural killer (NK) cells, also called pit cells, move along a substratum with a leading protopod, containing an actin-rich cytoplasm. B. adj. Entomology. Designating or relating to an embryonic or larval insect lacking abdominal segmentation and limbs, typical of certain parasitic hymenopterans. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > eggs or young > [adjective] > of young > of larva > lacking abdominal segmentation and limbs protopod1925 1925 A. D. Imms Gen. Textbk. Entomol. 179 In the protopod phase metamerism is incomplete, the abdomen being imperfectly differentiated. 1969 R. F. Chapman Insects xx. 400 Among the parasitic Hymenoptera the first instar larva hatches as a type known as a protopod larva. 2001 A. Prakash Laboratory Man. Entomol. v. 58 Protopod larvae are seen in families Platygasteridae, Dryinidae and Scelionidae. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.adj.1883
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