Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Located on the side nearest to the axis of an organ or organism.
  • adjective Of or relating to the side or surface facing or nearest to the axis of an organ, such as the upper surface of a leaf; ventral.

from The Century Dictionary.

  • In botany, in a plane facing the axis. See the extract.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective botany On the side that is towards the axis or central line, usually on the upper side.
  • adjective developmental biology adjacent to the axis, or in vertebrates the notochord.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective nearest to or facing toward the axis of an organ or organism

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin ad ("towards"); axis axis

Examples

  • Inferred ancestral features include more than two whorls (or series) of tepals and stamens, stamens with protruding adaxial or lateral pollen sacs, several free, ascidiate carpels closed by secretion, extended stigma, extragynoecial compitum, and one or several ventral pendent ovule (s).

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  • Intact adaxial sheath epidermal cells were imaged with an Olympus FV1000 confocal microscope equipped with a 60×oil immersion lens

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  • Petiole 2-6 mm, puberulent and ± setose; leaf blade papery, oblong to oblong - lanceolate, 5-11 × 1. 5-3.5 cm; base cuneate; margin ciliate; apex obtuse and mucronate; abaxial surface densely gray-white-pubescent, yellow-brown setose along midrib; adaxial surface sparsely to densely puberulent when young.

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  • Most leaves show dorsoventral anatomy: the upper (adaxial) and lower (abaxial) surfaces have somewhat different construction and may serve different functions. transparent (epidermal cells lack chloroplasts) and coated on the outer side with a waxy cuticle that prevents water loss.

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  • In ferns and most flowering plants the mesophyll is divided into two layers: palisade layer of tightly packed, vertically elongated cells, one to two cells thick, directly beneath the adaxial epidermis.

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  • Intact adaxial sheath epidermal cells were imaged with an Olympus FV1000 confocal microscope equipped with a 60×oil immersion lens

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  • Typically, the stomata are more numerous over the abaxial (lower) epidermis than the (adaxial) upper epidermis.

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  • T. caries (Fig. 1a), the merger of Buller's drop with a prominent adaxial drop is associated with a much greater change in surface tension that powers the longer flight of the spore.

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  • At the same time, water also condenses on the adjacent spore surface and a lens-shaped "adaxial drop" develops.

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  • Initially, Buller's drop is separated from the adaxial drop by its position on a knob called the hilar appendix, but the expanding drops coalesce when their surfaces make contact.

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