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单词 pinniform
释义

pinniformadj.1

Brit. /ˈpɪnᵻfɔːm/, U.S. /ˈpɪnəˌfɔrm/
Forms: 1700s– pinniform, 1800s pinnaeform (irregular).
Origin: Formed within English, by compounding. Etymons: pinni- comb. form, -form comb. form2.
Etymology: < pinni- comb. form + -form comb. form2; compare -iform comb. form. Compare earlier (in slightly different sense) penniform adj.
Biology. Now rare.
Having the form of or resembling a fin or feather; pinnate.
ΘΚΠ
the world > animals > animal body > general parts > body and limbs > [adjective] > relating to limbs > relating to wings or fins > like a fin or flipper
finny1648
pinniform1730
flipper-like1889
the world > plants > part of plant > leaf > [adjective] > compound or lobed
cut1565
winged1668
pinnate1687
conjugated1690
trifoliated1698
auriculated1712
auriculate1714
pennate1723
pinnated1725
pennated1727
bigeminate1753
lyrated1753
pedated1753
pinnatifid1753
supradecomposite1753
supradecompound1753
ternated1753
trifoliate1753
lyrate1760
pedate1760
quinate1760
ternate1760
tripinnate1760
palmed1767
bilobated1770
lyre-shaped1778
pennatifid1778
finger-parted1783
superdecompound1783
bipinnate1785
biternate1785
conjugate1785
lobed1787
tergeminate1793
wing-cleft1796
yoked?1803
binate1807
septenate1807
trijugous1813
auricled1821
pinniform1821
multijugous1828
pinnulate1828
trifoliolate1828
bipinnatifid1830
multifoliolate1831
multijugate1831
quinquefoliolate1832
bifoliolate1835
pinnatisected1837
palmatifid1839
tripinnatifid1839
foliate1840
palmatipartite1840
pinnatilobate1840
pinnatipartite1840
pinnatisect1840
bipinnated1842
biconjugate1847
imparipinnate1847
paripinnate1851
pinnatulate1855
polytomous1856
multifoliate1857
pennati-partite1857
pennati-sected1857
ternato-pinnate1857
tripinnatisect1857
patentoternate1859
septemfoliate1859
bipinnatipartite1861
bipinnatisected1861
bipalmate1864
pinnatilobed1866
septenous1866
cut-leaved1870
lobing1870
ternatisect1870
tripinnated1876
trijugate1880
jugate1887
pinnulated1890
trisect1899
tridigitate1900
trigeminous1900
1730 J. Cook Anat. & Mech. Ess. xxi. 261 By reason of the Obliquity of the Fibres of those Pinniform Muscles, their Power becomes much less than that of the others.
1752 J. Hill Gen. Nat. Hist. III. 313 The Balæna, with..a pinniform tuberosity on the back.
1821 W. P. C. Barton Flora N. Amer. (new ed.) I. 43 Leaves..often inclining to be pinnatifid; the pinnæform segments arcuate.
1977 Science 4 Mar. 895 (caption) Its basketlike dendrites are postsynaptic to receptors via pinniform projections.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).

pinniformadj.2

Origin: Formed within English, by compounding. Etymons: pinna n.1, -iform comb. form.
Etymology: < pinna n.1 + -iform comb. form. N.E.D. (1906) gives the pronunciation as (pi·nifǭɹm) /ˈpɪnɪfɔːm/.
Zoology. Obsolete. rare. Apparently only attested in dictionaries or glossaries.
Having the form of or resembling a mollusc of the genus Pinna.
ΚΠ
1890 Cent. Dict. Pinniform,..4. Resembling a mollusk of the genus Pinna.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online June 2021).
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adj.11730adj.21890
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