Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A pitcher-shaped or bottle-shaped part or organ, such as the hollow tubular leaf of a pitcher plant.
from The Century Dictionary.
- noun [Also less prop. Ascidia.] A genus of tunicates, typical of the principal family of the class Ascidia, some of whose species are known as sea-squirts: synonymous with Phallusia.
- noun [lowercase; pl. ascidia (-ä).] In botany: Any tubular, horn-shaped, or pitcher-like formation, arising usually from the union of the margins of a leaf or other organ, or from the disproportionate growth of some part.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) A pitcher-shaped, or flask-shaped, organ or appendage of a plant, as the leaves of the pitcher plant, or the little bladderlike traps of the bladderwort (Utricularia).
- noun (Zoöl.) A genus of simple ascidians, which formerly included most of the known species. It is sometimes used as a name for the Ascidioidea, or for all the Tunicata.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany A
pitcher -shaped orflask -shapedorgan orappendage of aplant . - noun zoology One of a
genus of simpleascidians , which formerly included most of the known species; sometimes used as a name for the Ascidiidae, or for all the Tunicata.
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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It appeared from some transitional forms that the adventitious leaflet, just mentioned, was due to the exaggerated development of this gland, but no clue was afforded as to the origin of the ascidium.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters
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It is not in all cases easy to trace the origin and true nature of the ascidium, as the venation is sometimes obscure.
Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters
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Though it is of course conceded that the ascidium of _Nepenthes_ has many secondary devices which are lacking in _Croton_, it seems hardly allowable to deny the possibility of an analogous origin for both.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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Interrupted leaves, with an ascidium on a naked prolongation of the midvein, are by no means limited to the _Croton_ varieties.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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I have alluded to these cases more than once, but on this occasion a closer inspection of the structure of the ascidium is required.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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[673] Likewise we must refrain from a consideration of the physiologic qualities of the tendril, and confine our attention to the combination of a limb, a naked midvein and an ascidium.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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They are narrower than those of the teasel, but this depends, as we have seen for the "one-leaved" ascidium, on the shape of the original leaf.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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This tube must bear at its summit the conical ascidium produced by the two connate limbs.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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The more distant the [671] lobes, the deeper the ascidium will become.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
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By this contrivance the double ascidium assumes a terminal position.
Species and Varieties, Their Origin by Mutation Hugo de Vries 1891
cryptofascistbbq commented on the word ascidium
–noun, plural -cid⋅i⋅a -sid-ee-uh Show IPA . Botany, Mycology.
a baglike or pitcherlike part.
July 3, 2009