| Abbreviation | Category | Meaning |
 | T | Cancers And Tumors | Extent Of Primary Tumor |
 | T | Cancers And Tumors | Primary Tumor [TNM (tumor-node-metastasis) Classification: T0 No Evidence Of Primary Tumor, T1 To T4 Tumors In Progressing Sizes, And TX No Evidence Of Primary Tumor] |
 | T | Cardiac Cardio And Heart | An Electrocardiographic Wave Corresponding To The Repolarization Of The Ventricles [wave] |
 | T + 1, T + 2, T + 3 | Eyes And Ocular | First, Second, And Third Stages Of Increased Intraocular Tension |
 | T NM | Cancers And Tumors | Tumor With Lymph Node Metastases |
 | T-1, T-2, T-3 | Eyes And Ocular | First, Second, And Third Stages Of Decreased Intraocular Tension |
 | T-CFC | Cell And Cells | T-colony Forming Cell |
 | T-CLL | Cancers And Tumors | T-cell Chronic Lymphatic Leukemia |
 | T-CLL | Cell And Cells | T-cell Chronic Lymphatic Leukemia |
 | T-D | Cell And Cells | T-cell Dependent [antigen] |
 | T-I | Cell And Cells | T-cell Independent [antigen] |
 | T-IBS | Cancers And Tumors | T-cell Immunoblastic Sarcoma |
 | T-IBS | Cell And Cells | T-cell Immunoblastic Sarcoma |
 | T-MDS | Syndromes | Therapy-related Myelodysplastic Syndrome |
 | T-NHL | Cancers And Tumors | T-cell-derived Non-Hodgkin Leukemia |
 | T-NHL | Cell And Cells | T-cell-derived Non-Hodgkin Leukemia |
 | T0 | Cancers And Tumors | T1, T2, T3, Size Of Tumor In Staging Cancers |
 | T0 | Cancers And Tumors | No Evidence Of Primary Tumor [TNM (tumor-node-metastasis) Classification] |
 | T1 | Breast | Breast Tumor Smaller Than 2 Cm [TNM (tumor-node-metastasis) Classification]; Longitudinal Relaxation Time |
 | T1 | Cancers And Tumors | Breast Tumor Smaller Than 2 Cm [TNM (tumor-node-metastasis) Classification]; Longitudinal Relaxation Time |
 | T1-4 | Cancers And Tumors | Presence Of Tumors Progressing In Size, Number, And Penetration [TNM (tumor-node-metastasis) Classification] |
 | T1A | Breast | Breast Tumor 0.1 To 0.5 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1A | Cancers And Tumors | Breast Tumor 0.1 To 0.5 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1B | Breast | Breast Tumor 0.5 To 1.0 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1B | Cancers And Tumors | Breast Tumor 0.5 To 1.0 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1C | Breast | Breast Tumor 1.0 To 2.0 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1C | Cancers And Tumors | Breast Tumor 1.0 To 2.0 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1D | Breast | Inflammatory Breast Carcinoma [TNM (tumor-node-metastasis) Classification] |
 | T1D | Cancers And Tumors | Inflammatory Breast Carcinoma [TNM (tumor-node-metastasis) Classification] |
 | T1MIC | Breast | Breast Tumor Microinvasion Of Less Than 0.1 Cm [TNM (tumor-node-metastasis) Classification] |
 | T1MIC | Cancers And Tumors | Breast Tumor Microinvasion Of Less Than 0.1 Cm [TNM (tumor-node-metastasis) Classification] |
 | T2 | Breast | Breast Tumor 2.0 To 5.0 Cm [TNM (tumor-node-metastasis) Classification]; Transverse Relaxation Time |
 | T2 | Cancers And Tumors | Breast Tumor 2.0 To 5.0 Cm [TNM (tumor-node-metastasis) Classification]; Transverse Relaxation Time |
 | T3 | Common Medical Abbreviations | Triiodothyronine |
 | T3 | Common Medical Abbreviations | Triiodothyronine |
 | T3 | Breast | Breast Tumor Larger Than 5.0 Cm [TNM (tumor-node-metastasis) Classification] |
 | T3 | Cancers And Tumors | Breast Tumor Larger Than 5.0 Cm [TNM (tumor-node-metastasis) Classification] |
 | T3/T4 SYNDROME | Syndromes | Low Triiodothyronine/low Thyroxine Syndrome |
 | T4 | Common Medical Abbreviations | Thyroxine |
 | T4 | Breast | Breast Tumor Of Any Size With Extension To Chest Wall And Skin [TNM (tumor-node-metastasis) Classification] |
 | T4 | Cancers And Tumors | Breast Tumor Of Any Size With Extension To Chest Wall And Skin [TNM (tumor-node-metastasis) Classification] |
 | T4 | Skin And Dermal | Breast Tumor Of Any Size With Extension To Chest Wall And Skin [TNM (tumor-node-metastasis) Classification] |
 | T4A | Breast | Breast Tumor With Extension To Chest Wall [TNM (tumor-node-metastasis) Classification] |
 | T4A | Cancers And Tumors | Breast Tumor With Extension To Chest Wall [TNM (tumor-node-metastasis) Classification] |
 | T4B | Breast | Breast Tumor With Edema (including Peau D'orange) Or Skin Ulceration Or Satellite Nodules [TNM (tumor-node-metastasis) Classification] |
 | T4B | Cancers And Tumors | Breast Tumor With Edema (including Peau D'orange) Or Skin Ulceration Or Satellite Nodules [TNM (tumor-node-metastasis) Classification] |
 | T4B | Skin And Dermal | Breast Tumor With Edema (including Peau D'orange) Or Skin Ulceration Or Satellite Nodules [TNM (tumor-node-metastasis) Classification] |
 | TA | Acids | Tolfenamic Acid |
 | TA | Acids | Teichoic Acid |
 | TA | Acids | Titratable Acid |