Definition of hemihedral in English:

hemihedral

Syllabification: hem·i·he·dral
Pronunciation: /ˌheməˈhēdrəl/

Entry from US English dictionary

adjective

Crystallography
Having half the number of planes required for symmetry of the holohedral form.

Definition of hemihedral in:

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Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope