The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix I
Indo-European Roots
ENTRY:
skand-
DEFINITION:
Also skend-. To leap, climb. 1.scan, scandent, scansion, scansorial, scantling; ascend, condescend, descend, transcend, from Latin scandere, to climb. 2. Suffixed form *skand-alo-.scandal, slander, from Greek skandalon, a snare, trap, stumbling block. 3. Suffixed form *skand-sl-.echelon, escalade, scale2, from Latin sclae, steps, ladder. (Not in Pokorny; compare Sanskrit skandati, he jumps, and Old Irish scendim, I jump.)