sek- / Indo-European roots
Examples of words with the root sek-: -sect, dissect, extispicy, insect, intersect, resect, saw, saxatile, saxicolous, saxifrage, Saxon, scythe, secant, sectile, section, sector, sedge, seecatch, segment, sickle, skin, zax.
▲ Derivatives include scythe, Saxon, skin, insect, sickle.
1. scythe from Old English sīthe, sigthe, sickle, from Germanic *segithō, sickle.
2. Suffixed o-grade form *sok-ā-. saw1; hacksaw from Old English sagu, sage, saw, from Germanic *sagō, a cutting tool, saw.
3. Suffixed o-grade form *sok-yo-. sedge from Old English secg, sedge, from Germanic *sagjaz, "sword" plant with a cutting edge.
4. Suffixed o-grade form *sok-so-.
a. zax from Old English seax, knife, from Germanic *sahsam, knife, sword;
b. Saxon from Late Latin Saxō (plural Saxonēs), a Saxon, from West Germanic tribal name *Saxon-, Saxon, traditionally (but doubtfully) regarded as from Germanic *sahsam (as if "warrior with knives").
5. Extended root *skend-, to peel off, flay. skin from Old Norse skinn, skin, from Germanic *skinth-.
6. Basic form *sek-.
a. secant, -sect, sectile, section, sector, segment; dissect, insect, intersect, resect, transect from Latin secāre, to cut;
b. extispicy from Latin extispex, diviner who observes entrails, from exta, entrails, perhaps contracted from *exsecta, things cut out, from secāre, to cut (-spex, "he who sees"; see spek-).
7. Lengthened-grade form *sēk-. sickle from Latin sēcula, sickle.
8. Possible suffixed variant form *sak-so-. sassafras; saxicolous, saxifrage from Latin saxum, stone (< "broken-off piece"?).
[Pokorny 2. sē̆k- 895, sken-(d-) 929.]