单词 extinctness 释义 extinctness ? Obs.—0[f. extinct a. + -ness.]The quality of being extinct.1727–36in Bailey; whence1775in Ash.{var l=document.getElementsByTagName("link");var r=/OED4.css$/;for(var i=l.length-1;i>=0;i--)with(l[i].href){var m=match(r...