-clastcomb. form

Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly.

Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin -clastes; Greek -κλάστης.

Etymology: < post-classical Latin -clastes (in e.g. -iconoclastes iconoclast n.) and its etymon Hellenistic Greek -κλάστης breaker (in e.g. ὀστοκλάστης ossifrage) < ancient Greek κλασ- , stem of κλᾶ̑ν to break (see clastic adj.) + -της, suffix forming agent nouns. Compare French -claste, German -klast.Earliest in the isolated early borrowing iconoclast n., which is the model for most formations in sense 1. In sense 2 apparently earliest in lithoclast n. 2, apparently after a German model. In sense 3 apparently earliest in osteoclast n. 1, after a German model. In sense 4 apparently earliest in pyroclast n. (after pyroclastic adj.).

1. Forming nouns denoting a person who breaks or destroys what is specified by the first element, as crystalloclast n., eidoloclast n. at eidolon n. Derivatives, mythoclast n., etc.

2. Forming nouns denoting surgical instruments used to break or crush the thing specified by the first element, as lithoclast n. 2, cranioclast n. at cranio- comb. form 2, genuclast n., etc.

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3. Biology. Forming nouns denoting types of cell which destroy or break down the tissue specified by the first element, as osteoclast n. 1, spongoclast n. at spongo- comb. form . rare.

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4. Geology. Forming nouns denoting fragments of rock or rock-forming particles of the type specified by the first element, as bioclast n., porphyroclast n., etc.

This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2018).

单词	-clast
释义	-clastcomb. form Primary stress is retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly. Origin: Of multiple origins. Partly a borrowing from Latin. Partly a borrowing from Greek. Etymons: Latin -clastes; Greek -κλάστης. Etymology: < post-classical Latin -clastes (in e.g. -iconoclastes iconoclast n.) and its etymon Hellenistic Greek -κλάστης breaker (in e.g. ὀστοκλάστης ossifrage) < ancient Greek κλασ- , stem of κλᾶ̑ν to break (see clastic adj.) + -της, suffix forming agent nouns. Compare French -claste, German -klast.Earliest in the isolated early borrowing iconoclast n., which is the model for most formations in sense 1. In sense 2 apparently earliest in lithoclast n. 2, apparently after a German model. In sense 3 apparently earliest in osteoclast n. 1, after a German model. In sense 4 apparently earliest in pyroclast n. (after pyroclastic adj.). 1. Forming nouns denoting a person who breaks or destroys what is specified by the first element, as crystalloclast n., eidoloclast n. at eidolon n. Derivatives, mythoclast n., etc. 2. Forming nouns denoting surgical instruments used to break or crush the thing specified by the first element, as lithoclast n. 2, cranioclast n. at cranio- comb. form 2, genuclast n., etc. Categories » 3. Biology. Forming nouns denoting types of cell which destroy or break down the tissue specified by the first element, as osteoclast n. 1, spongoclast n. at spongo- comb. form . rare. Categories » 4. Geology. Forming nouns denoting fragments of rock or rock-forming particles of the type specified by the first element, as bioclast n., porphyroclast n., etc. This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2018). < comb. form
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