Any living individual, whether plant or animal, considered as a whole.
calculated mean o. (CMO) a hypothetical o. whose characters are the means of both the positive and negative characters of the o.'s which belong to the same taxon as the CMO, as opposed to the hypothetical mean. o.
defective o. auxotrophic mutant
fastidious o. a bacterial organism having complex nutritional requirements.
hypothetical mean o. (HMO) a hypothetical o. whose characters are the means of the positive characters of the organisms which belong to the same taxon as the HMO, as opposed to the calculated mean o.
pleuropneumonia-like o.'s (PPLO) the original name given to a group of bacteria which did not possess cell walls; these o.'s, isolated from man and other animals, soil, and sewage, are now assigned to the order Mycoplasmatales.
Browse Medical References: