es·tral 
(ĕstrəl)
(ĕstrəl)adj.
Estrous.
- trichlorid
- trichloride
- trichloroacetic acid
- trichloroethane
- trichloroethene
- trichloroethylene
- tricho-
- trichocyst
- trichocystic
- trichogyne
- trichoid
- trichome
- trichomonad
- trichomonadal
- trichomonal
- trichomoniasis
- trichopteran
- trichosis
- trichotillomania
- trichotomous
- trichotomously
- trichotomy
- -trichous
- trichroic
- trichroism