Definition of dicotyledon in English:

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Pronunciation: /dīˌkädlˈēdn/


A flowering plant with an embryo that bears two cotyledons (seed leaves). Dicotyledons constitute the larger of the two great divisions of flowering plants, and typically have broad, stalked leaves with netlike veins (e.g., daisies, hawthorns, oaks). Compare with monocotyledon.
  • Class Dicotyledoneae (or -donae, -dones; sometimes Magnoliopsida), subdivision Angiospermae.
Example sentences
  • However, it should be kept in mind that young leaves of dicotyledons are more heterogenous as to cell age, than sections of a monocotyledon leaf.
  • The broad differences between halophytic monocotyledons and dicotyledons have been attributed to differences in water content and hence vacuolar volume.
  • Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake.



Pronunciation: /ˌdīˌkädəˈlēd(ə)nəs/
Example sentences
  • In the leaf axils of most dicotyledonous trees well-developed buds are present.
  • In many dicotyledonous leaves, parenchyma or sclerenchyma cells of the vascular bundle sheath extend to the epidermis on both leaf sides, forming the so-called bundle sheath extensions.
  • This type of leaf formation can be applied to monocotyledonous and dicotyledonous plants.


Early 18th century: from modern Latin dicotyledones (plural), from di- 'two' + cotyledon (see cotyledon).

Words that rhyme with dicotyledon

cedarn, cotyledon, Eden, monocotyledon, Sweden

For editors and proofreaders

Syllabification: di·cot·y·le·don

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