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 (pə-sŏl′ə-jē, pō-)
The study of the dosages of medications.

[Greek posos, what quantity + -logy.]


(Medicine) the branch of medicine concerned with the determination of appropriate doses of drugs or agents
[C19: from French posologie, from Greek posos how much]
posological adj


(pəˈsɒl ə dʒi, poʊ-)

the branch of pharmacology dealing with the determination of dosage.
[1805–15; < Greek póso(s) how much + -logy]
pos•o•log•ic (ˌpɒs əˈlɒdʒ ɪk) pos`o•log′i•cal, adj.


1. the science of medicinal dosage.
2. a system of dosage. — posologic, posological, adj.
See also: Medical Specialties
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.posology - the pharmacological determination of appropriate doses of drugs and medicines
materia medica, pharmacological medicine, pharmacology - the science or study of drugs: their preparation and properties and uses and effects
References in periodicals archive ?
The posological question remains as to whether smoking marijuana produces antineoplastic concentrations of cannabinoids in the exposed tissues of recreational or medicinal users.
Using the Posological Theorem with a dosage required to incapacitate half the members of an exposed population ([ICt.