placo-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly; see e.g. placoderm n. and adj.

Forms: Before a vowel plac-.

Origin: A borrowing from Greek, combined with an English element. Etymons: Greek πλακ- , πλάξ , -o- connective.

Etymology: < ancient Greek πλακ-, πλάξ flat plate, tablet ( < an ablaut variant of the Indo-European base of floe n.) + -o- connective. Compare German Placo- (formations in which are found from at least the mid 19th cent.), French placo-.Found in a small number of scientific words from the mid 19th cent., earliest in placodont adj., an adaptation of a scientific Latin genus name; formations in English are found very shortly afterwards, apparently earliest in placoganoid adj. Combining with second elements of Greek origin. The position of the stress differs between compounds of placo- in accordance with the general stress patterns of English.

Chiefly Zoology and Palaeontology.

Categories »

Provided with or consisting of a flat plate or plates.

This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2020).

单词	placo-
释义	placo-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly; see e.g. placoderm n. and adj. Forms: Before a vowel plac-. Origin: A borrowing from Greek, combined with an English element. Etymons: Greek πλακ- , πλάξ , -o- connective. Etymology: < ancient Greek πλακ-, πλάξ flat plate, tablet ( < an ablaut variant of the Indo-European base of floe n.) + -o- connective. Compare German Placo- (formations in which are found from at least the mid 19th cent.), French placo-.Found in a small number of scientific words from the mid 19th cent., earliest in placodont adj., an adaptation of a scientific Latin genus name; formations in English are found very shortly afterwards, apparently earliest in placoganoid adj. Combining with second elements of Greek origin. The position of the stress differs between compounds of placo- in accordance with the general stress patterns of English. Chiefly Zoology and Palaeontology. Categories » Provided with or consisting of a flat plate or plates. This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2020). < comb. form
随便看	mechanico-physical mechanico-receptor mechanicoacoustic mechanicochemical mechanicocorpuscular mechanicointellectual mechanicomaterial mechanicomerciful mechanicomorphic mechanicomorphism mechanicophysical mechanicoreceptor mechanics mechanisable mechanisation mechanisations mechanise mechanised mechaniser mechanisers mechanises mechanising mechanism mechanisms mechanist