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

[Greek posos, what quantity + -logy.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


1. the science of medicinal dosage.
2. a system of dosage. — posologic, posological, adj.
See also: Medical Specialties
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The most provided intervention for unintentional nonad-herence (80.7 percent of the unintentional nonadherence causes) was directed toward forgetfulness like using drug packaging (74.6 percent), including the posology in the box (59.8 percent), and using reminders (31.2 percent).
The level of education affects the variable posology and the method of administration regarding the level of knowledge only.
To check whether there was compliance with the pharmacological treatment, the patient's report on observance of proper posology while using the medication was taken into account.
Issues such as the mechanism of action, posology and therapeutic indications still need to be better studied.
In treating hypertension, the sufferer orally ingests a daily volume of about 200 ml of its leaf-maceration for a duration of 3-4 days, whereas its posology in treating MSD comprises oral administration of a glassful (about 250 ml) of its leaf-maceration thrice a day for a period of 21 days.
The feasibility of the experimental OT intervention was assessed by calculating the ratio between the number of patients who completed it according to the predefined posology and the total number of patients enrolled in the intervention group (IG).
Tapentadol PR was administered according to the therapeutic indications, posology, and warnings for use stated in the Summary of Product Characteristics.
The patient signed the informed consent, specifically designed for this purpose, and started administration of the CBS eye drops in June 2016, with the posology of 0.4 ml (8 drops) in each eye, each day for a total of two months.
The transplantation is certainly the leading factor accounting for her clinical improvement; manganese-induced parkinsonism is renown to be refractory to levodopa administration, regardless of the posology or dosing.
Section 6.2 requires that the PIs should be in English and must include information on therapeutic indications, posology and method of administration, contraindications, special warnings and precautions drug interactions, contraindications in pregnancy and lactation, effects on ability to drive and use machines, undesirable effects, and antidote for overdosage.
Table 4 shows the general recommendations for reconstitution, dilution and infusion of antimicrobials used in OPAT, along with doses and posology of each drug envisaged.