dextral

Concise Oxford English Dictionary © 2008 Oxford University Press:
dextral /ˈdɛkstr(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 towards the right.

• 3 Zoology (of a spiral mollusc shell) with whorls rising to the right and coiling anticlockwise.

▶noun a right-handed person.

– derivatives
dextrality /-ˈstralɪti/ noun,
dextrally adverb.

– origin C17: from med. L. dextralis, from L. dextra ‘the right hand’, from dexter ‘on the right’.