| TLI | thymidine labeling index; total lymphatic irradiation; trypsin-like immune activity; Tucker-Lewis in... |
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| TTI | tension-time index; time-tension index; timepto-intubation; torque-time interval; transtracheal insu... |
| AHI | Apnea-Hypopnea Index |
| CI | 1) Corporate Identity 2) Completed Infarction 3) Cardiac I... |
| CMI | 1) Cornell Medical Index 2) Cell-Mediated Immunity |
| thoracic index | Anteroposterior diameter of the thorax times 100 divided by the transverse diameter of the thorax. Synonym: chest index. (05 Mar 2000) |
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| tibiofemoral index | The ratio obtained by multiplying the length of the tibia by 100 and dividing by the length of the femur. (05 Mar 2000) |
| effective temperature index | A composite index of environmental comfort which is compared after exposure to different combinations of air temperature, humidity, and movement. (05 Mar 2000) |
| total facial index | Length is measured from the nasion to the mental tubercle: (nasimental length × 100)/bizygomatic width. (05 Mar 2000) |
| empathic index | The degree of emotional understanding or empathy experienced by a health services provider or other person concerning another person, more particularly of a sufferer from some emotional or somatic condition. (05 Mar 2000) |
| endemic index | The percentage of children infected with malaria or other endemic disease, in any given locality. (05 Mar 2000) |
| transversovertical index | The relation of the height to the length of the skull: (height × 100)/length. Synonym: height-length index, length-height index, transversovertical index. (05 Mar 2000) |
| facial index | Relation of the length of the face to its maximal width between the zygomatic prominences; to get (05 Mar 2000) |
| karyopyknotic index | An index used to monitor the hormonal status of the patient as reflected by exfoliated vaginal cells and their morphology; an expression of the percentage of intermediate and superficial cells from squamous cells of vaginal epithelium which have pyknotic nuclei. (05 Mar 2000) |
| zygomaticoauricular index | The ratio between the zygomatic and the auricular diameters of the skull or head. (05 Mar 2000) |
| uricolytic index | <biochemistry> The percentage of uric acid oxidised to allantoin before being secreted. (05 Mar 2000) |
| Flower's dental index | Relation of the dental length (distance from the mesial surface of the first premolar to the distal surface of the third molar) to the basinasal (basion to nasion) length: (dental length ×100)/basinasal length, a system of numbers for indicating comparative size of the teeth. Synonym: Flower's dental index. (05 Mar 2000) |
| freedle index | An index of the quality of spawning gravel obtained by dividing geometric mean diameter of particle size by the sorting coefficient. (09 Oct 1997) |
| free thyroxine index | An arbitrary value obtained by multiplying the triiodothyronine uptake by the serum thyroxine concentration; it largely corrects for variations in thyroid-bound globulin concentration by providing a clinically valid estimate of the physiologically active free thyroxine; direct assay or laboratory measurement of free serum thyroxine yields a more accurate value. (05 Mar 2000) |
| length-breadth index | The ratio of the maximal breadth to the maximal length of the head, obtained by the formula: (breadth × 100)/length. Synonym: length-breadth index. (05 Mar 2000) |