trea·tise 
(trētĭs)
(trētĭs)n.
A systematic, usually extensive written discourse on a subject.
[Middle English treatis, from Anglo-Norman tretiz, alteration of treteiz, from Vulgar Latin *tractātīcius, from Latin tractātus, past participle of tractāre, to drag about, deal with; see TREAT.]
- crypt-
- crypt-
- cryptanalysis
- cryptanalyst
- cryptanalytic
- cryptanalyze
- cryptesthesia
- cryptic
- cryptical
- cryptically
- crypticness
- crypto
- crypto-
- thermoelectrically
- thermoelectricity
- thermoelectron
- thermogenesis
- thermogenetic
- thermogenic
- thermogram
- thermograph
- thermographic
- thermographically
- thermography
- thermohaline