| acanthocyte | (noun) an abnormal red blood cell that has thorny projections of protoplasm | - |
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| acanthocytosis | (noun) the presence of acanthocytes in the blood stream (as in abetalipoproteinemia) | - |
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| agranulocytosis | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulosis, granulocytopenia |
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| akaryocyte | (noun) a cell without a nucleus (as an erythrocyte) | Synonyms: acaryote, akaryote |
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| astrocyte | (noun) comparatively large neuroglial cell | - |
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| blastocyte | (noun) an undifferentiated embryonic cell | - |
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| blastocytoma | (noun) a tumor composed of immature undifferentiated cells | Synonyms: blastoma, embryonal carcinosarcoma |
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| choanocyte | (noun) any of the flagellated cells in sponges having a collar of cytoplasm around the flagellum; they maintain a flow of water through the body | Synonyms: collar cell |
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| cytidine | (noun) a nucleoside component of DNA; composed of cytosine and deoxyribose | Synonyms: deoxycytidine |
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| cytoarchitectonics | (noun) the cellular composition of a bodily structure | Synonyms: cytoarchitecture |
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| cytoarchitecture | (noun) the cellular composition of a bodily structure | Synonyms: cytoarchitectonics |
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| cytochrome | (noun) (biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration) | - |
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| cytogenesis | (noun) the origin and development and variation of cells | Synonyms: cytogeny |
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| cytogeneticist | (noun) a geneticist who specializes in the cellular components associated with heredity | - |
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| cytogenetics | (noun) the branch of biology that studies the cellular aspects of heredity (especially the chromosomes) | - |
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| cytogeny | (noun) the origin and development and variation of cells | Synonyms: cytogenesis |
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| cytokine | (noun) any of various protein molecules secreted by cells of the immune system that serve to regulate the immune system | - |
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| cytokinesis | (noun) organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells | - |
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| cytokinin | (noun) any of a class of plant hormones that promote cell division and delay the senescence of leaves | Synonyms: kinin |
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| cytol | (noun) the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism | Synonyms: cytoplasm |
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| cytologist | (noun) a biologist who studies the structure and function of cells | - |
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| cytology | (noun) the branch of biology that studies the structure and function of cells | - |
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| cytolysin | (noun) a substance that partly or completely destroys animal cells | - |
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| cytolysis | (noun) pathological breakdown of cells by the destruction of their outer membrane | - |
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| cytomegalovirus | (noun) any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems | Synonyms: CMV |
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| cytomembrane | (noun) a thin membrane (a double layer of lipids) enclosing the cytoplasm of a cell; proteins in the membrane control passage of ions (like sodium or potassium or calcium) in and out of the cell | Synonyms: cell membrane, plasma membrane |
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| cytopenia | (noun) a deficiency of some cellular element of the blood | - |
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| cytophotometer | (noun) a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm | - |
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| cytophotometry | (noun) the study of chemical compounds inside a cell by means of a cytophotometer | - |
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| cytoplasm | (noun) the protoplasm of a cell excluding the nucleus; is full of proteins that control cell metabolism | Synonyms: cytol |
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| cytoplast | (noun) the intact cytoplasmic content of a cell | - |
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| cytosine | (noun) a base found in DNA and RNA and derived from pyrimidine; pairs with guanine | Synonyms: C |
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| cytoskeleton | (noun) a microscopic network of actin filaments and microtubules in the cytoplasm of many living cells that gives the cell shape and coherence | - |
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| cytosmear | (noun) a thin tissue or blood sample spread on a glass slide and stained for cytologic examination and diagnosis under a microscope | Synonyms: cytologic smear, smear |
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| cytosol | (noun) the aqueous part of the cytoplasm within which various particles and organelles are suspended | - |
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| cytostome | (noun) mouth of a protozoan | - |
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| cytotoxicity | (noun) the degree to which something is toxic to living cells | - |
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| cytotoxin | (noun) any substance that has a toxic effect on cells | - |
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| deoxycytidine | (noun) a nucleoside component of DNA; composed of cytosine and deoxyribose | Synonyms: cytidine |
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| dideoxycytosine | (noun) an antiviral drug used to combat HIV infection; a nucleoside analog reverse transcriptase inhibitor (NARTI) | Synonyms: ddC, DDC, zalcitabine |
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| erythrocyte | (noun) a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus | Synonyms: RBC, red blood cell |
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| erythrocytolysin | (noun) any substance that can cause lysis (destruction) of erythrocytes (red blood cells) and the release of their hemoglobin | Synonyms: erythrolysin, haemolysin, hemolysin |
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| gametocyte | (noun) an immature animal or plant cell that develops into a gamete by meiosis | - |
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| gangliocyte | (noun) a nerve cell whose body is outside the central nervous system | Synonyms: ganglion cell |
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| granulocyte | (noun) a leukocyte that has granules in its cytoplasm | - |
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| granulocytopenia | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulocytosis, agranulosis |
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| haematocytopenia | (noun) an abnormally low number of red blood cells in the blood | Synonyms: hematocytopenia |
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| haematocyturia | (noun) the presence of red blood cells in the urine | Synonyms: hematocyturia |
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| hematocytopenia | (noun) an abnormally low number of red blood cells in the blood | Synonyms: haematocytopenia |
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| hematocyturia | (noun) the presence of red blood cells in the urine | Synonyms: haematocyturia |
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| histiocyte | (noun) a macrophage that is found in connective tissue | - |
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| histiocytosis | (noun) a blood disease characterized by an abnormal multiplication of macrophages | - |
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| labrocyte | (noun) a large connective tissue cell that contains histamine and heparin and serotonin which are released in allergic reactions or in response to injury or inflammation | Synonyms: mast cell, mastocyte |
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| leucocyte | (noun) blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system | Synonyms: leukocyte, WBC, white blood cell, white blood corpuscle, white cell, white corpuscle |
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| leucocytosis | (noun) an abnormal increase in the number of white blood cells in the blood as a result of infection (as in leukemia) | Synonyms: leukocytosis |
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| leucocytozoan | (noun) parasitic in birds | Synonyms: leucocytozoon |
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| leucocytozoon | (noun) parasitic in birds | Synonyms: leucocytozoan |
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| leukocyte | (noun) blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system | Synonyms: leucocyte, WBC, white blood cell, white blood corpuscle, white cell, white corpuscle |
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| leukocytosis | (noun) an abnormal increase in the number of white blood cells in the blood as a result of infection (as in leukemia) | Synonyms: leucocytosis |
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| lymphocyte | (noun) an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection | Synonyms: lymph cell |
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| lymphocytopenia | (noun) an abnormally small number of lymphocytes in the circulating blood | Synonyms: lymphopenia |
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| lymphocytosis | (noun) an abnormal increase in the number of lymphocytes in the circulating blood | - |
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| macrocyte | (noun) abnormally large red blood cell (associated with pernicious anemia) | Synonyms: megalocyte |
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| macrocytosis | (noun) the presence of macrocytes in the blood | - |
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| mastocyte | (noun) a large connective tissue cell that contains histamine and heparin and serotonin which are released in allergic reactions or in response to injury or inflammation | Synonyms: labrocyte, mast cell |
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| megakaryocyte | (noun) a large bone marrow cell; regarded as the source of blood platelets | - |
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| megalocyte | (noun) abnormally large red blood cell (associated with pernicious anemia) | Synonyms: macrocyte |
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| melanocyte | (noun) a cell in the basal layer of the epidermis that produces melanin under the control of the melanocyte-stimulating hormone | - |
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| microcyte | (noun) an abnormally small red blood cell (less than 5 microns in diameter) | - |
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| microcytosis | (noun) a blood disorder characterized by the presence of microcytes (abnormally small red blood cells) in the blood; often associated with anemia | - |
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| microgliacyte | (noun) a cell of the microglia that may become phagocytic and collect waste products of nerve tissue | - |
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| monocyte | (noun) a type of granular leukocyte that functions in the ingestion of bacteria | - |
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| monocytosis | (noun) increase in the number of monocytes in the blood; symptom of monocytic leukemia | - |
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| myelocyte | (noun) an immature leukocyte normally found in bone marrow | - |
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| neurogliacyte | (noun) a cell of the neuroglia | Synonyms: glial cell, neuroglial cell |
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| oligodendrocyte | (noun) a cell of the oligodendroglia | - |
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| oocyte | (noun) a female gametocyte that develops into an ovum after two meiotic divisions | - |
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| osteocyte | (noun) mature bone cell | - |
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| pancytopenia | (noun) an abnormal deficiency in all blood cells (red blood cells and white blood cells and platelets); usually associated with bone marrow tumor or with aplastic anemia | - |
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| phaeochromocytoma | (noun) a vascular tumor of the adrenal gland; hypersecretion of epinephrine results in intermittent or sustained hypertension | Synonyms: pheochromocytoma |
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| phagocyte | (noun) a cell that engulfs and digests debris and invading microorganisms | Synonyms: scavenger cell |
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| phagocytosis | (noun) process in which phagocytes engulf and digest microorganisms and cellular debris; an important defense against infection | - |
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| pheochromocytoma | (noun) a vascular tumor of the adrenal gland; hypersecretion of epinephrine results in intermittent or sustained hypertension | Synonyms: phaeochromocytoma |
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| pinocytosis | (noun) process by which certain cells can engulf and incorporate droplets of fluid | - |
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| plasmacyte | (noun) a cell that develops from a B lymphocyte in reaction to a specific antigen; found in bone marrow and sometimes in the blood | Synonyms: plasma cell |
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| plasmacytoma | (noun) neoplasm of plasma cells (usually in bone marrow) | - |
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| pneumocytosis | (noun) pneumonia occurring in infants or in persons with impaired immune systems (as AIDS victims) | Synonyms: interstitial plasma cell pneumonia, pneumocystis carinii pneumonia, pneumocystis pneumonia |
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| polycythemia | (noun) a disorder characterized by an abnormal increase in the number of red blood cells in the blood | - |
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| reticulocyte | (noun) an immature red blood cell containing a network of filaments or granules | - |
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| scythe | (noun) an edge tool for cutting grass; has a long handle that must be held with both hands and a curved blade that moves parallel to the ground | - |
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| siderocyte | (noun) an abnormal red blood cell containing granules of iron not bound in hemoglobin | - |
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| spermatocyte | (noun) a male gametocyte that develops into four spermatids | - |
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| spherocyte | (noun) an abnormal spherical red blood cell | - |
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| syncytium | (noun) a mass of cytoplasm containing several nuclei and enclosed in a membrane but no internal cell boundaries (as in muscle fibers) | - |
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| thrombocyte | (noun) tiny bits of protoplasm found in vertebrate blood; essential for blood clotting | Synonyms: blood platelet, platelet |
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| thrombocytopenia | (noun) a blood disease characterized by an abnormally small number of platelets in the blood | Synonyms: thrombopenia |
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| thrombocytosis | (noun) increase in the number of platelets in the blood which tends to cause clots to form; associated with many neoplasms and chronic infections and other diseases | - |
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