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fixation


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n.1. (in psychoanalysis) a failure of psychological development, in which traumatic events prevent a child from progressing to the next developmental stage. This was formerly hypothesized to be a cause of mental illness and of personality disorder. See also psychosexual development. 2. a procedure for the hardening and preservation of tissues or microorganisms to be examined under a microscope. Fixation kills the tissues and ensures that their original shape and structure are retained as closely as possible. It also prepares them for sectioning and staining. The specimens can be immersed in a chemical fixative or subjected to freeze drying.

1. (in psychoanalysis) a failure of psychological development, in which traumatic events prevent a child from progressing to the next developmental stage. This was formerly hypothesized to be a cause of mental illness and of personality disorder. See also psychosexual development. 2. a procedure for the hardening and preservation of tissues or microorganisms to be examined under a microscope. Fixation kills the tissues and ensures that their original shape and structure are retained as closely as possible. It also prepares them for sectioning and staining. The specimens can be immersed in a chemical fixative or subjected to freeze drying.

Subjects: Medicine and Health — Science and Mathematics.


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