cecidiumn.
/sɪˈsɪdɪəm/ = gall n.3; (see also quot. 1902).
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the world > plants > disease or injury > [noun] > gall or abnormal growth
gall1398
elationc1420
dog rose1526
tumour?1541
to-growing1562
gall-nut1572
gall-apple1617
apple1668
by-fruit1682
witches' besom1849
witches' broom1856
mad-apple1868
nail gall1879
marble gall1882
gall-knob1892
scroll-gall1895
twig-gall1900
cecidium1902
1902 Encycl. Brit. XXIX. 499/1 A great variety of deformations and growths produced by insects and mites as well as fungi has been described... The whole are now included under the term Cecidia; a prefix gives the name of the organism to which the attacks are due, e.g., Phytoptocecidia are the galls formed by Phytoptid mites.
1946 Nature 14 Dec. 852/1 Plant-feeders which induce in their hosts the malformations termed galls or cecidia.
This entry has not yet been fully updated (first published 1972; most recently modified version published online June 2018).
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n.1902