valveless

形容词 adj.
中文释义

英文释义

形容词 adj.
  1. Having no valves. not-comparable

词源

Etymology tree
English valve
Proto-Indo-European *lewh₁-
Proto-Indo-European *lewHs-der.
Proto-Germanic *leusaną
Proto-Germanic *lausaz
Proto-Germanic *-lausaz
Proto-West Germanic *-laus
Old English -lēas
Middle English -les
English -less
English valveless
From valve + -less.
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