toponium

名词 n.
中文释义

英文释义

名词 n.
  1. Any hypothetical meson formed from a top quark and its antiquark; would be very unstable because of the large mass of the top quark particle

词形变化

toponiums plural toponia plural

词源

Etymology tree
English top
English onium
English -on
Proto-Indo-European *-om
Proto-Italic *-om
Latin -umder.
English -ium
English -onium
English toponium
From top + -onium. From top quark and "-onium" as in positronium.
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