/sek"stil, -stuyl/ , adj.
1. Astron. noting or pertaining to the aspect or position of two heavenly bodies when 60° distant from each other.
n.
2. Astron. a sextile position or aspect.
3. Astrol. a sextile position or aspect, conducive to mental stimulation.
4. Statistics. a quantile for the special case of six equal proportions.
[ 1550-60; sextilis, equiv. to sext ( us ) SIXTH + -ilis -ILE ]