COMMENT: Reconstructed for the PEC level. The root demonstrates different Ablaut grades (*-i-/*-e-/*-u-). The isomorphism between Av.-And. *b-uṭV 'part', Lak. b-aṭu-l- 'separate' and Darg. Chir. b-iṭal 'part' suggests that the derivate *w-ĭṭV (*w-ŭṭV) can also be reconstructed for PEC.
Cf. also HU *ṭiṭi- > Hurr. tid- 'to share out, to separate', tidenni 'sharing out, re-division of land', Urart. ṭiṭj-u/ošǝ 'share, (movable) property' (see Diakonoff-Starostin 1986, 27).