| boustrophedon | (noun) an ancient writing system: having alternate lines written in opposite directions; literally `as the ox ploughs' | - |
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| cotyledon | (noun) embryonic leaf in seed-bearing plants | Synonyms: seed leaf |
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| dicotyledon | (noun) flowering plant with two cotyledons; the stem grows by deposit on its outside | Synonyms: dicot, exogen, magnoliopsid |
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| monocotyledon | (noun) a monocotyledonous flowering plant; the stem grows by deposits on its inside | Synonyms: endogen, liliopsid, monocot |
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| parallelepipedon | (noun) a prism whose bases are parallelograms | Synonyms: parallelepiped, parallelopiped, parallelopipedon |
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| parallelopipedon | (noun) a prism whose bases are parallelograms | Synonyms: parallelepiped, parallelepipedon, parallelopiped |
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