From tetra- + adelphy. <span class="searchmatch">tetradelphy</span> (uncountable) (botany) Presence of tetradelphous stamen....
monadelphy, monadelphous pentadelphy, pentadelphous polyadelphy, polyadelphous <span class="searchmatch">tetradelphy</span>, tetradelphous triadelphy, triadelphous fusion of stamen filaments...
tetraacetate tetraacetic tetraacid tetracid tetractinal tetraacylated tetrad <span class="searchmatch">tetradelphy</span> tetraalkylammonium tetraallelic tetraallyl tetraaluminium tetraluminium...