TMA

TMA is a three-letter abbreviation with multiple meanings, as described below:

Science

* Thermo-mechanical analysis, a type of thermal analysis
* Thrombotic microangiopathy
* Trimethylamine, (CH₃)₃N, a simple amine.
* Trimethylaluminium, (CH₃)₃Al
* The psychedelic hallucinogenic drugs and isomers of trimethoxyamphetamine:
** 3,4,5-trimethoxyamphetamine (TMA)
** 2,4,5-trimethoxyamphetamine (TMA-2)
** 2,3,4-trimethoxyamphetamine (TMA-3)
** 2,3,5-trimethoxyamphetamine (TMA-4)
** 2,3,6-trimethoxyamphetamine (TMA-5)
** 2,4,6-trimethoxyamphetamine (TMA-6)
* Tetramethoxyamphetamine, another hallucinogenic drug
* Thayer-Martin agar, a culture medium for isolating "Neisseria gonorrhoeae"
* Tissue microarray, a technique in histology for analysing large numbers of tissue samples
* A surgical procedure involving removal of a portion of the foot, transmetatarsal amputation.

Aviation

* Terminal Control Area - a type of airspace established at the confluence of ATS-routes in the vicinity of one or more major airports
* Traffic Management Advisor - an aviation term

Airlines

* Trans Mediterranean Airways, a cargo airline from Lebanon
* TransMeridian Airlines
* Trans Maldivian Airways

Space

* The Russian spaceflight missions:
** Soyuz TMA-1, launched 30 October 2002
** Soyuz TMA-2, launched 26 April 2003
** Soyuz TMA-3, launched 18 October 2003
** Soyuz TMA-4, launched 19 April 2004
** Soyuz TMA-5, launched 14 October 2004
** Soyuz TMA-6, launch 15 April 2005

Engineering

* Truck-Mounted Attenuator
* TMA Engineering, a United Kingdom engineering company with a sideline in narrow gauge locos
* Tower Mounted Amplifier

Other

* True Mon Amis
* Trade Management aimed at Asia - a business studies focused on Asia at the Rotterdam Business School
* "Tristeza y Muerte de Agave" (wilting and death of the agave), a tequila agave plant disease
* Tycho Magnetic Anomaly TMA-1, a fictional black monolith featured in

* A Yugoslavian series of landmines:
** TMA-1 mine
** TMA-2 mine
** TMA-3 mine
** TMA-4 mine