lemon

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lem·on

(lem'ŏn),
The fruit of Citrus limon (family Rutaceae); a source of citric and ascorbic acid; the freshly expressed juice of the ripe fruit is used as a refrigerant diuretic in fever, in the form of lemonade.
Synonym(s): limon
[L. limon]

lemon

Herbal medicine
A vitamin C-rich citrus fruit, the leaves of which are thought to be mildly sedative and antibacterial.

lemon

[Persian limun, lemon]
Fruit of the tree Citrus limon, containing citric acid. Lemons contain enough vitamin C to prevent or treat scurvy. Lemon may be used in place of vinegar, spices, and aromatic substances by those who cannot use such items.

CAUTION!

Food faddists who drink large quantities of lemon juice by sucking directly from the raw fruit may develop erosion of the enamel of their teeth.