retinicadj.
/rᵻˈtɪnɪk/, U.S. /rəˈtɪnɪk/ Chemistry. Now historical and rare.
retinic acid n. an acidic substance of uncertain identity (probably a mixture of terpenoids) extracted from retinite (fossil resin) using alcohol.
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the world > matter > chemistry > organic chemistry > acids obtained from plants or trees > [noun] > miscellaneous others
rheumic acid1816
arabic acida1836
rubiacic acid1835
aspartic acid1836
sylvic acid1836
tannic acid1836
oenanthic acid1837
gummic acid1838
retinic acid1838
roccellic acid1838
rubinic acid1838
lobelic acid1840
polychromatic acid1840
rhabarbaric acid1840
roccelline1840
humic1844
sumbulolic acid1844
isatic acid1845
opianic acid1845
parthenic acid1845
polychromic acid1847
styphnic acid1848
metapectic acid1849
tanningenic acid1852
jalapic acid1853
jalapinolic acid1855
sinapic acid1857
amalic acid1863
phycic acid1864
filicic acid1865
isamic acid1865
tannocaffeic acidc1865
tricarballylic acid1865
guaiaretic acid1866
pectous acid1866
phytomelin1866
porphyric acid1866
thujetic acid1868
turpetholic acid1868
viridic acid1868
rheotannic acid1869
arabinic acid1870
frangulic1872
sclerotic acid1876
theobromic acid1878
gynocardic acid1897
chaulmoogric acid1904
1838 J. F. W. Johnston in London & Edinb. Philos. Mag. 12 561 The nature of the retinic acid and the circumstances under which it occurs lead us to refer its origin to some tree belonging to the family of pines.
1852 W. Gregory Handbk. Org. Chem. (ed. 3) 416 Retinic acid, C21H9O3, was found by Johnston in the retinasphalt of Bovey.
1913 Thorpe's Dict. Appl. Chem. (ed. 2) IV. 564/1 The resin soluble in alcohol gave the formula C40H54O6, and was called by Johnston retinic acid.
This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022).
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adj.1838