"cut off or away, pare off," 1650s, from Latin resectus, past participle of resecare "to cut off, cut loose, curtail," from re-, here perhaps an intensive prefix (see re-), + secare "to cut" (from PIE root *sek- "to cut"). The surgical sense of "excising of some part," of a bone, etc., (1846) seems to be the sole surviving one. Related: Resected; resecting.
"capable of being cut or divided," 1620s, from Latin scissilis, from scindere "to cut" (from PIE root *skei- "to cut, split").
"decomposition into constituent parts by an electric current," 1834; the name was introduced by Faraday on the suggestion of the Rev. William Whewell, English polymath, from electro- + Greek lysis "a loosening," from lyein "to loosen, set free" (from PIE root *leu- "to loosen, divide, cut apart"). Originally of tumors, later (1879) of hair removal. Related: electrolytic.
"cut off, cut down, pare away" (expenses, etc.), 1620s, from obsolete French retrencher "to cut off, lessen, shorten" (Modern French retrancher, Old French retrenchier), from re- "back" (see re-) + Old French trenchier "to cut" (see trench). Especially "reduce (expenses) by economy" (1709). Related: Retrenched; retrenching.