pygidiumn.

Brit.

/pʌɪˈdʒɪdɪəm/,

/pʌɪˈɡɪdɪəm/, U.S.

/paɪˈdʒɪdiəm/,

/paɪˈɡɪdiəm/

Origin: A borrowing from Latin. Etymon: Latin pygidium.

Etymology: < post-classical Latin pygidium (K. Illiger 1806, in Magazin für Insektenkunde 5 17) < ancient Greek πυγή rump (see pygo- comb. form) + post-classical Latin -idium -idium comb. form.

Zoology and Palaeontology.

The posterior part of the body in various invertebrates, esp. certain arthropods, when this forms a distinct segment or division; esp. the tail section of a trilobite or the tergum of the last abdominal segment of an insect.

ΘΚΠ

the world > animals > invertebrates > bodies or parts > [noun] > posterior segment

pygidium1846

suranal1906

opisthosoma1935

1846 F. M'Coy Synopsis Silurian Fossils Ireland 45 Pygidium small, semicircular, of two segments, each marked by a ridge similar to that of the pleuripedes, and terminating similarly in a slender, deflected spine on each side.

1872 H. A. Nicholson Man. Palæontol. 161 The crust exhibits three regions.—1, a cephalic shield; 2, a variable number of movable ‘body-rings’ or thoracic segments; and 3, a caudal shield or pygidium.

1899 D. Sharp in Cambr. Nat. Hist. VI. 187 The last of such exposed dorsal plates [in beetles] is termed pygidium.

1925 A. D. Imms Gen. Textbk. Entomol. 41 The tergum of the last segment, whatever its numerical designation may be, is frequently referred to as the suranal plate or pygidium.

1978 M. Lambert Fossils 92 A Trilobite's body is divided into the cephalon (head), thorax (body) and pygidium (tail).

1990 C. Pellant Rocks, Minerals & Fossils 153 Solenopleura has fourteen segments in the thorax and a wide pygidium with seven or eight segments.

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

单词	pygidium
释义	pygidiumn. Brit. /pʌɪˈdʒɪdɪəm/, /pʌɪˈɡɪdɪəm/, U.S. /paɪˈdʒɪdiəm/, /paɪˈɡɪdiəm/ Origin: A borrowing from Latin. Etymon: Latin pygidium. Etymology: < post-classical Latin pygidium (K. Illiger 1806, in Magazin für Insektenkunde 5 17) < ancient Greek πυγή rump (see pygo- comb. form) + post-classical Latin -idium -idium comb. form. Zoology and Palaeontology. The posterior part of the body in various invertebrates, esp. certain arthropods, when this forms a distinct segment or division; esp. the tail section of a trilobite or the tergum of the last abdominal segment of an insect. ΘΚΠ the world > animals > invertebrates > bodies or parts > [noun] > posterior segment pygidium1846 suranal1906 opisthosoma1935 1846 F. M'Coy Synopsis Silurian Fossils Ireland 45 Pygidium small, semicircular, of two segments, each marked by a ridge similar to that of the pleuripedes, and terminating similarly in a slender, deflected spine on each side. 1872 H. A. Nicholson Man. Palæontol. 161 The crust exhibits three regions.—1, a cephalic shield; 2, a variable number of movable ‘body-rings’ or thoracic segments; and 3, a caudal shield or pygidium. 1899 D. Sharp in Cambr. Nat. Hist. VI. 187 The last of such exposed dorsal plates [in beetles] is termed pygidium. 1925 A. D. Imms Gen. Textbk. Entomol. 41 The tergum of the last segment, whatever its numerical designation may be, is frequently referred to as the suranal plate or pygidium. 1978 M. Lambert Fossils 92 A Trilobite's body is divided into the cephalon (head), thorax (body) and pygidium (tail). 1990 C. Pellant Rocks, Minerals & Fossils 153 Solenopleura has fourteen segments in the thorax and a wide pygidium with seven or eight segments. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1846
随便看	vising vision vision machinery vision poem vision quest vision splendid vision-field vision-haunted vision-literature vision-mixer vision-mixing vision-monger vision-seeing vision-seeking vision-struck vision-telephone vision-world visional visionally visionaries visionarily visionariness visionarinesses visionary visioned