Dextral shell
Dextral Dex"tral, a. [From {Dexter}.] Right, as opposed to sinistral, or left. [1913 Webster]

{Dextral shell} (Zo["o]l.), a spiral shell the whorls of which turn from left right, or like the hands of a watch when the apex of the spire is toward the eye of the observer. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • dextral shell — noun : a spiral gastropod shell the whorls of which turn from left to right …   Useful english dictionary

  • Dextral — Dex tral, a. [From {Dexter}.] Right, as opposed to sinistral, or left. [1913 Webster] {Dextral shell} (Zo[ o]l.), a spiral shell the whorls of which turn from left right, or like the hands of a watch when the apex of the spire is toward the eye… …   The Collaborative International Dictionary of English

  • dextral — adjective Date: 1646 of or relating to the right ; inclined to the right: as a. right handed 3 b. of a gastropod shell having the whorls coiling clockwise down the spire when viewed with the apex toward the observer and having the aperture… …   New Collegiate Dictionary

  • dextral gastropods — (MOLLUSCA) A gastropod with genitalia on the right side of the head foot mass or pallial cavity; commonly the shell, when viewed with the apex uppermost, has the aperture on the right; see sinistral gastropods …   Dictionary of invertebrate zoology

  • dextral — [ dɛkstr(ə)l] adjective 1》 of or on the right side or the right hand. The opposite of sinistral.     ↘right handed. 2》 Geology relating to or denoting a strike slip fault in which the motion of the block on the further side of the fault is… …   English new terms dictionary

  • dextral — adj. & n. adj. 1 (of a person) right handed. 2 of or on the right. 3 Zool. (of a spiral shell) with whorls rising to the right and coiling in an anticlockwise direction. 4 Zool. (of a flat fish) with the right side uppermost. n. a right handed… …   Useful english dictionary

  • Gastropod shell — [ 1 umbilicus2 parietal callus3 aperture4 columella5 suture6 whorl7 apex] The gastropod shell is a shell which is part of the body of a gastropod or snail. It is an external skeleton or exoskeleton, which serves not only for muscle attachment,… …   Wikipedia

  • Sinistral and dextral — Not to be confused with Dexter and sinister. Sinistral and dextral are scientific terms that describe chirality (“handedness”) or relative direction in a number of disciplines. The terms are derived from the Latin words for “left” (sinister) and… …   Wikipedia

  • Neoplanorbis — Three views of a shell of Neoplanorbis tantillus oriented as if it were a dextral shell Scientific classification Kingdom …   Wikipedia

  • Euhadra — Taxobox name = Euhadra image caption = Euhadra quaesita image width = 250px status = regnum = Animalia phylum = Mollusca classis = Gastropoda ordo = Pulmonata familia = Bradybaenidae genus = Euhadra genus authority = Pilsbry, 1890 species =… …   Wikipedia

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