T

13 Entries in this category

Tannin

Tannic acid. Tannin is obtained from the galls (hence gallotannin) of various plant species

teratogenic

teratogenic; causes malformations through effects on early stages of organ formation in animals

Thallus

Vegetation organ in mosses and ferns

Thiamine

Vitamin B₁; coenzyme function in the breakdown of carbohydrates

Thyroid hormone

3,5,3'-triiodothyronine (T3) and 3,5,3',5'-tetraiodothyronine (T4) also known as thyroxine

Tin

The significance of tin for both the plant and animal kingdoms is still unclear.

Titriplex

Trade name for chelators of the EDTA type

Tocopherols

Vitamin E; the most important naturally occurring compound with vitamin E activity is α-tocopherol. It has 3 chirality centres (2, 4', 8') at which the methyl groups are in R configuration.

Total hardness

1° dH total hardness corresponds to 0.179 mmol/l alkaline earth ions (mainly calcium and magnesium)

Trematode

Parasitic sucking worm with two suction cups. Reproduction of hermaphrodites takes place via alternation of generations.

Trypaflavin

Obsolete name for acriflavine

Tryptophan

One of the 20 naturally occurring and also an essential amino acid

Turgor

The osmotic pressure that presses the plasma tube of a plant cell firmly against the cell wall and thus gives non-lignified plant parts their stability