Definition of dicotyledon in English:

dicotyledon

noun ˌdʌɪkɒtɪˈliːd(ə)ndaɪˌkɑdlˈidn

Botany

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).
〔植〕双子叶植物。比较MONOCOTYLEDON
Class Dicotyledoneae (or -donae, -dones; sometimes Magnoliopsida), subdivision Angiospermae
Compare with monocotyledon
Example sentencesExamples
- 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.
- Monocotyledons, such as maize, have a single cotyledon; dicotyledons, such as Arabidopsis, have two.
- The broad differences between halophytic monocotyledons and dicotyledons have been attributed to differences in water content and hence vacuolar volume.
- Thus, the phloem is neither ‘interxylary’ nor ‘included’ in dicotyledons with successive cambia.
- Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake.

Derivatives

dicotyledonous

adjective ˌdʌɪkɒtɪˈliːd(ə)nəsˌdaɪˌkɑdəˈlid(ə)nəs

Botany

Within the leaf sheath a certain amount of development can be expected: in contrast to dicotyledonous plants, chloroplast division and development can occur in the absence of light in barley.
Example sentencesExamples
- Although GVG-regulated gene expression has been characterized extensively in dicotyledonous and monocotyledonous plants such as tobacco, Arabidopsis, and rice, it has not been tested in gymnosperms.
- In the leaf axils of most dicotyledonous trees well-developed buds are present.
- This type of leaf formation can be applied to monocotyledonous and dicotyledonous plants.
- 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.

Origin

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

Rhymes

cedarn, cotyledon, Eden, monocotyledon, Sweden

Definition of dicotyledon in US English:

dicotyledon

noundīˌkädlˈēdndaɪˌkɑdlˈidn

Botany

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).
〔植〕双子叶植物。比较MONOCOTYLEDON
Class Dicotyledoneae (or -donae, -dones; sometimes Magnoliopsida), subdivision Angiospermae
Compare with monocotyledon
Example sentencesExamples
- The broad differences between halophytic monocotyledons and dicotyledons have been attributed to differences in water content and hence vacuolar volume.
- 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.
- Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake.
- Thus, the phloem is neither ‘interxylary’ nor ‘included’ in dicotyledons with successive cambia.
- Monocotyledons, such as maize, have a single cotyledon; dicotyledons, such as Arabidopsis, have two.

Origin

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

词汇	dicotyledon
释义	Definition of dicotyledon in English: dicotyledon noun ˌdʌɪkɒtɪˈliːd(ə)ndaɪˌkɑdlˈidn Botany 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). 〔植〕双子叶植物。比较MONOCOTYLEDON Class Dicotyledoneae (or -donae, -dones; sometimes Magnoliopsida), subdivision Angiospermae Compare with monocotyledon Example sentencesExamples 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. Monocotyledons, such as maize, have a single cotyledon; dicotyledons, such as Arabidopsis, have two. The broad differences between halophytic monocotyledons and dicotyledons have been attributed to differences in water content and hence vacuolar volume. Thus, the phloem is neither ‘interxylary’ nor ‘included’ in dicotyledons with successive cambia. Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake. Derivatives dicotyledonous adjective ˌdʌɪkɒtɪˈliːd(ə)nəsˌdaɪˌkɑdəˈlid(ə)nəs Botany Within the leaf sheath a certain amount of development can be expected: in contrast to dicotyledonous plants, chloroplast division and development can occur in the absence of light in barley. Example sentencesExamples Although GVG-regulated gene expression has been characterized extensively in dicotyledonous and monocotyledonous plants such as tobacco, Arabidopsis, and rice, it has not been tested in gymnosperms. In the leaf axils of most dicotyledonous trees well-developed buds are present. This type of leaf formation can be applied to monocotyledonous and dicotyledonous plants. 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. Origin Early 18th century: from modern Latin dicotyledones (plural), from di- 'two' + cotyledon (see cotyledon). Rhymes cedarn, cotyledon, Eden, monocotyledon, Sweden Definition of dicotyledon in US English: dicotyledon noundīˌkädlˈēdndaɪˌkɑdlˈidn Botany 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). 〔植〕双子叶植物。比较MONOCOTYLEDON Class Dicotyledoneae (or -donae, -dones; sometimes Magnoliopsida), subdivision Angiospermae Compare with monocotyledon Example sentencesExamples The broad differences between halophytic monocotyledons and dicotyledons have been attributed to differences in water content and hence vacuolar volume. 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. Besides this constitutive system, iron reductases have been described in dicotyledons and non-grass monocotyledons that reduce iron prior to uptake. Thus, the phloem is neither ‘interxylary’ nor ‘included’ in dicotyledons with successive cambia. Monocotyledons, such as maize, have a single cotyledon; dicotyledons, such as Arabidopsis, have two. Origin Early 18th century: from modern Latin dicotyledones (plural), from di- ‘two’ + cotyledon (see cotyledon).
随便看	sessions Sessions, Roger sessionss sesterce sesterces sestertii sestertius sestet sestets sestina set set set set- seta set a beggar on horseback and he'll ride to the devil set a beggar on horseback and he'll ride to the devil set ablaze set about set about setaceous setaceous set adrift setae set afoot