Category: O
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Ontogenesis
The development of a single member of a species, phylogenesis.
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On-the-job training
Skills learned at the place of employment.
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One-step procedure (one-stage)
A type of surgery that involves biopsy and surgery in a single operation.
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One-room school
A setting in which all grade levels are taught by a single teacher in a single room.
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One-parent family
A nuclear family in which only one parent is living with the children. May be caused by death, divorce, separation, desertion, or children born out of wedlock.
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One gene-one function hypothesis
The hypothesis that a gene performs a single function in a cell.
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One gene-one enzyme hypothesis
The belief that separate enzymatic steps in metabolic pathways are controlled by genes.
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Ondontalgia
A toothache.
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Oncology
The science that studies tumors. The scientific study of new growths, especially cancers. That branch of medicine concerned with the study and treatment of tumors. A branch of medicine focused on the treatment of cancers. The medical specialty concerned with the diagnosis, treatment, and study of cancer. A doctor who is trained in oncology is…
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Oncologist
A physician who specializes in the study and treatment of malignancies. A doctor who specialises in oncology, especially cancer. A medical professional who specializes in the treatment of tumors and cancer. A doctor who is trained in oncology, the medical specialty concerned with the diagnosis and treatment of cancer. Medical oncologists are internists with special…