† pediadadj.

Origin: A borrowing from Greek. Etymons: Greek πεδιαδ-, πεδιάς.

Etymology: < ancient Greek πεδιαδ-, πεδιάς flat, level < πεδίον a plain (see pedion n.) + -αδ- , -άς -ad suffix¹. N.E.D. (1904) gives the pronunciation as (pe·diæ̆d) /ˈpɛdɪad/.

Crystallography. Obsolete. rare.

Of, relating to, or consisting of pedia (see pedion n.).

ΘΚΠ

the world > matter > chemistry > crystallography (general) > crystal (general) > crystal systems > [adjective] > triclinic

triclinate1837

triclinohedral1837

triclinic1854

triclinohedric1882

pediad1899

1899 W. J. Lewis Treat. Crystallogr. xi. 148 The class may be called the pediad class of the anorthic system.

This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2020).

单词	pediad
释义	† pediadadj. Origin: A borrowing from Greek. Etymons: Greek πεδιαδ-, πεδιάς. Etymology: < ancient Greek πεδιαδ-, πεδιάς flat, level < πεδίον a plain (see pedion n.) + -αδ- , -άς -ad suffix¹. N.E.D. (1904) gives the pronunciation as (pe·diæ̆d) /ˈpɛdɪad/. Crystallography. Obsolete. rare. Of, relating to, or consisting of pedia (see pedion n.). ΘΚΠ the world > matter > chemistry > crystallography (general) > crystal (general) > crystal systems > [adjective] > triclinic triclinate1837 triclinohedral1837 triclinic1854 triclinohedric1882 pediad1899 1899 W. J. Lewis Treat. Crystallogr. xi. 148 The class may be called the pediad class of the anorthic system. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2020). < adj.1899
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