ptil-
combining form 
or ptilo-
Etymology: New Latin, from Greek ptilon; akin to Greek pteron feather — more at feather 
 : down : feather 
< Ptilocercus >
or ptilo-
< Ptilocercus >
| 词汇 | ptil- | 
| 词根词缀 | Webster ptil- or ptilo- < Ptilocercus > | 
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