ATP: Asia Tree Preservation2016-12-16T18:22:46+08:00
abnormal swelling of plant tissues caused by gall wasps. mites. nematodes. and various insects and less commonly by fungi or bacteria (contrast with burl).
Merriam-Webster Online Dictionarygall
a) - bile , especially bile obtained from an animal and used in the arts or medicine
b) something bitter to endure
c) bitterness of spirit - rancor
brazen boldness coupled with impudent assurance and insolence temerity
a) a skin sore caused by chronic irritation
b) a cause or state of exasperation
archaic - flaw
to fret and wear away by friction - chafe the loose saddle galled the horse's back the galling of a metal bearing
- irritate vex sarcasm galls her
to become sore or worn by rubbing
an abnormal outgrowth of plant tissue usually due to insect or mite parasites or fungi and sometimes forming an important source of tannin - see gall wasp illustration
« Back to Glossary Index
Galls can also appear on skeletal animals and in the fossil
record. Two galls with perforations on a crinoid
stem (Apiocrinites negevensis
) from the Middle Jurassic
of southern Israel
Galls (from Latin galla, 'oak-apple') or cecidia (from Greek kēkidion, anything gushing out) are a kind of swelling growth on the external tissues of plants, fungi, or animals. Plant galls are abnormal outgrowths of plant tissues, similar to benign tumors or warts in animals. They can be caused by various parasites, from viruses, fungi and bacteria, to other plants, insects and mites. Plant galls are often highly organized structures so that the cause of the gall can often be determined without the actual agent being identified. This applies particularly to some insect and mite plant galls. The study of plant galls is known as cecidology.
In human pathology, a gall is a raised sore on the skin, usually caused by chafing or rubbing.
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