*kel- 1

Proto-Indo-European root meaning "to cover, conceal, save."

It forms all or part of: Anselm; apocalypse; Brussels; caliology; Calypso; calyx; ceiling; cell; cellar; cellular; cellulite; cellulitis; cilia; clandestine; cojones; coleoptera; color; conceal; eucalyptus; hall; hell; helm (n.2) "a helmet;" helmet; hold (n.2) "space in a ship below the lower deck;" hole; hollow; holster; housing (n.2) "ornamental covering;" hull (n.1) "seed covering;" kil-; kleptomania; occult; rathskeller; supercilious; Valhalla; William.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit cala "hut, house, hall;" Greek kalia "hut, nest," kalyptein "to cover," koleon, koleos "sheath," kelyphos "shell, husk;" Latin cella "small room, store room, hut," celare "to hide, conceal," clam "secret," clepere "to steal, listen secretly to;" Old Irish cuile "cellar," celim "hide," Middle Irish cul "defense, shelter;" Gothic hulistr "covering," Old English heolstor "lurking-hole, cave, covering," Gothic huljan "to cover over," hulundi "hole," hilms "helmet," halja "hell," Old English hol "cave," holu "husk, pod;" Old Prussian au-klipts "hidden;" Old Church Slavonic poklopu "cover, wrapping."

Proto-Indo-European root meaning "to be prominent," also "hill."

It forms all or part of: colonel; colonnade; colophon; column; culminate; culmination; excel; excellence; excellent; excelsior; hill; holm.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit kutam "top, skull;" Latin collis "hill," columna "projecting object," cellere "raise;" Greek kolōnos "hill," kolophōn "summit;" Lithuanian kalnas "mountain," kalnelis "hill," kelti "raise;" Old English hyll "hill," Old Norse hallr "stone," Gothic hallus "rock."