tang-, tact-, tast-, ting-, -tig -tag, -teg-

(Latin: touch, feel; try; reach; handle; evaluate, estimate)

lithologic contact (s) (noun), lithologic contacts (pl)
The surface that separates rock bodies of different lithologies, or rock types: "A lithologic contact can be conformable (parallel strata that have undergone a similar geologic history) or unconformable depending upon the types of rock, their relative ages, and their attitudes. A fault surface can also serve as a lithologic contact."
redintegrate (adjective)
A reference to that which is restored to wholeness or a perfect state; renewed.
redintegrate (verb), redintegrates; redintegrated; redintegrating
1. To restore to a state of wholeness, completeness or unity; to renew, re-establish, in a united or perfect state.
2. To become united again.
redintegration (s) (noun), redintegrations (pl)
1. The act or process of making whole again; a renewal.
2. The reinstatement of a memory upon the presentation of a stimulus element that was a part of the stimulus complex that had aroused the event: "A redintegration by showing a souvenir that reminds a person of a holiday."
Scientia, integritas.
Knowledge, integrity.

Motto of Massachusetts Bay Community College, Wellesley Hills, Massachusetts, USA.

tact (s) (noun), tacts (pl)
A significant sensitivity to what is proper and appropriate when dealing with other people, including the ability to speak or to behave without offending or upsetting anyone: The use of tact is the ability to get in touch with people and to have relations with them in such a way as to not make anyone feel sad, worried, or angry.
Doing the right thing and to not upset anyone.
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tactful (adjective)
Showing or having consideration for another person: "Wilson made a tactful remark when he tried to show how Sonja made a mistake."
tactfully (adverb)
tactfulness (s) (noun)
tactic (s) (noun), tactics (pl)
1. The military science that deals with securing objectives set by strategy; especially, the technique of deploying and directing troops, ships, and aircraft in effective maneuvers against an enemy: "Tactics is a required course at all military academies."
2. Maneuvers used against an enemy: "Guerrilla tactics were employed during most of the war."
3. A procedure or set of maneuvers engaged in to achieve an end, an aim, or a goal.
tactician (s) (noun), tacticians (pl)
1. Someone who is skilled in the planning and execution of military tactics.
2. Relating to tactics or done in order to achieve something.
tactile (adjective), more tactile, most tactile
1. Relating to or pertaining to the sense of touch: An infant's tactile development is believed to take place quickly at his or her early age level.

Because of the callouses on Clark's hands, they have lost their normal tactile sensitivity.

Tactile indications of disease are signs that are perceptible by physical contact; such as, the roughness of the skin.

2. Descriptive of a part of the physical structure of a person or animal which is used for feeling: One of the most used tactile sections of the body are the fingers.
3. Etymology: from Latin tactilis which came from tangere, "to touch".
Pertaining to the sense of touching.
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tactile anesthesia (s) (noun), tactile anesthesias (pl)
The absence or lack of the sense of touch in the fingers, possibly resulting from injury or disease: "Tactile anesthesia can be a result of congenital kor psychosomatic and may cause the patient to incur severe burns, serious cuts, contusions (bruises), or abrasions."
tactile hair (s) (noun), tactile hairs (pl)
A hair, or hairs, that is sensitive to the sensation of touch: "The patient was able to easily feel it when someone simply touched one of the hairs on his head."
tactile hyperesthesia (s) (noun), tactile hyperesthesias (pl)
An abnormal increase or excessive sensitivity when a person is touching or when he or she is touched: "Because of Jim's tactile hyperesthesia, whenever he touches anything it is felt much stronger than normal and also when his skin is touched."