of or on the left; "a sinistral gastropod shell with the apex upward has its opening on the left when facing the observer"; "a sinistral flatfish lies with the left eye uppermost"
Of or pertaining to the left, inclining to the left; sinistrous; opposed to dextral
preferring to use left foot or hand or eye; "sinistral individuals exhibit dominance of the left hand and eye
Having the whorls of the spire revolving or rising to the left; reversed; -- said of certain spiral shells
{s} of or pertaining to the left side; left-handed; coiling to the left (of certain gastropod shells)
Having the whorls of the spire revolving or rising to the left; reversed; said of certain spiral shells