The best replacement for segment is line.

The best alternatives to segment are rated as following:
★★★★★  line
★★★★★  ray
★★★★  sector
★★★  target market
★★  packet
★★  niche
★★  section
★  parasegment
★  datagram
★  fragment
★  frame
★  leg
★  interspace
  page
  profit center
  ip datagram
  subnet
  flight leg
  line segment
  bss
  market sector

Your alternative for segment is not listed? Suggest!
Speaking about segment, one probably shouldn't forget about midpoint.

Other search terms related to segment and their ratings are:
★★★★★ midpoint
★★★ 7447
★ decoder
You have in mind a companion for segment and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of segment in all years. Click on graph for more.
segment
line
ray