STRAIGHT LINE LETTERS ONLY (AEFHIKLMNTVWXYZ)
Longest word made from straight line letters: possibly METHYLHEXANEAMINE (Dorland\u27s Medical Dictionary). (ZENZIZENZIZENZIc and sym-METHYLETHYLETHYLENE have straight line strings of 15, 19 letters.)
Longest straight line letter heterogram: several, including WILKHAVEN and WYKHAMITE, have 9 letter
