Lemon vs. Citron

Lemon and Citron Definitions
Lemon
A spiny evergreen tree (Citrus limon) native to Asia, widely cultivated for its oval yellow fruit.
Citron
A thorny evergreen shrub or small tree (Citrus medica) native to India and widely cultivated for its large lemonlike fruits that have a thick warty rind.
Lemon
The fruit of this tree, having an aromatic rind and juicy, acid pulp.
Citron
The fruit of this plant, whose rind is often candied and used in confections and fruitcakes.
Lemon
Lemon yellow.
Citron
A globose watermelon (Citrullus lanatus var. citroides) having white flesh that is candied or pickled.
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Lemon
(Informal) One that is unsatisfactory or defective
Their new car turned out to be a lemon.
Citron
A grayish-green yellow.
Lemon
Lemon-yellow.
Citron
A greenish yellow colour.
Lemon
Made from lemons.
Citron
A small citrus tree, Citrus medica.
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Lemon
Tasting or smelling like lemons.
Citron
The fruit of a citron tree.
Lemon
A yellowish citrus fruit.
Citron
The candied rind of the citron fruit.
Lemon
A semitropical evergreen tree, Citrus limon, that bears such fruits.
Citron
Of a greenish yellow colour.
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Lemon
A taste or flavour/flavor of lemons.
Citron
A fruit resembling a lemon, but larger, and pleasantly aromatic; it is produced by the citron tree (Citrus medica). The thick rind, when candied, is the citron of commerce. The fruit was once called the lime.
Lemon
A more or less bright shade of yellow associated with lemon fruits.
Citron
A citron tree, Citrus medica.
Lemon
(slang) A defective or inadequate item or individual.
He didn’t realise until he’d paid for it that the car was a lemon.
Citron
A citron melon.
Lemon
Favor.
A thousand quid for that motor? Do me a lemon! I could get it for half that.
Citron
Large lemonlike fruit with thick aromatic rind; usually preserved
Lemon
(fandom) A piece of fanfiction involving explicit sex.
Citron
Thorny evergreen small tree or shrub of India widely cultivated for its large lemonlike fruits that have thick warty rind
Lemon
Containing or having the flavour/flavor and/or scent of lemons.
Lemon
Of the pale yellow colour/color of lemons.
Lemon
Smart; cheeky, vocal.
Lemon
(transitive) To flavour with lemon.
You can start the vegetables cooking while you are lemoning the fish.
Lemon
An oval or roundish fruit resembling the orange, and containing a pulp usually intensely acid. It is produced by a tropical tree of the genus Citrus, the common fruit known in commerce being that of the species Citrus Limonum or Citrus Medica (var. Limonum). There are many varieties of the fruit, some of which are sweet.
Lemon
The tree which bears lemons; the lemon tree.
Lemon
Yellow oval fruit with juicy acidic flesh
Lemon
A strong yellow color
Lemon
A small evergreen tree that originated in Asia but is widely cultivated for its fruit
Lemon
A distinctive tart flavor characteristic of lemons
Lemon
An artifact (especially an automobile) that is defective or unsatisfactory