| tantalum. |
| a graduate student in a college or university who is the recipient of a teaching fellowship. Abbreviation: TA |
| a form of individual or group psychotherapy focusing on social interactions, psychological games, and analysis of relationships as persons shift among the roles of parent, child, and adult. Abbreviation: TA |

| Ta The symbol for the element tantalum. |
| TA abbr. teaching assistant |
tan·ta·lum (tān'tə-ləm) n. Symbol Ta A very hard, heavy, gray metallic element that is exceptionally resistant to chemical attack below 150°C. It is used to make light-bulb filaments, electrolytic capacitors, lightning arresters, nuclear reactor parts, and some surgical instruments. Atomic number 73; atomic weight 180.948; melting point 2,996°C; boiling point 5,425°C; specific gravity 16.6; valence 2, 3, 4, 5. See Table at element. [New Latin, from Latin Tantalus, Tantalus (from its high resistance to absorbing acids even when immersed in them); see Tantalus.] |
| teaching assistant n. Abbr. TA A graduate student in a university or college who is awarded a fellowship that provides him or her with financial aid in exchange for teaching duties. Also called teaching fellow. teaching assistantship n. |
Ta
The symbol for the element tantalum.
transactional analysis trans·ac·tion·al analysis (trān-sāk'shə-nəl, -zāk'-)
n.
A system of psychotherapy that analyzes personal relationships and interactions in terms of conflicting or complementary ego states that correspond to the roles of parent, child, and adult.
| Ta
The symbol for tantalum. |
| tantalum (tān'tə-ləm) Pronunciation Key
Symbol Ta A hard, heavy, gray metallic element that is highly resistant to corrosion at low temperatures. It is used to make light-bulb filaments, surgical instruments, and glass for camera lenses. Atomic number 73; atomic weight 180.948; melting point 2,996°C; boiling point 5,425°C; specific gravity 16.6; valence 2, 3, 4, 5. See Periodic Table. |
| ta Tamil |
| Ta tantalum |
TA
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