sinistral
adjective
- on the left-hand side; left
- left-handed
- having whorls that rise to the apex in clockwise spirals from the opening at the lower left: said of the shells of some gastropods
See sinistral in American Heritage Dictionary 4
(sĭnˈĭ-strəl, sĭ-nĭsˈtrəl)
adjective- Of or facing the left side.
- Left-handed.
- Zoology Relating to or being a gastropod shell that has its aperture to the left when facing the observer with the apex upward.
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