dosage

/ˈdəʊsɪdʒ/ (bre, ipa) · /ˈdəʊsɪdʒ/ (ame, ipa) · /ˈdō-sij/ (ame, mw)

dosage — noun

  • dosagesingular
  • dosagesplural

1. the medically recommended size and frequency of a drug — how much to take each t

1.名詞B1
釋義

the medically recommended size and frequency of a drug — how much to take each time and how often to repeat it

例句

The doctor increased Anthony's dosage of antibiotics from 250 mg to 500 mg.

Sana forgot to take her evening dosage of the pain medication.

dosage of [medication type]

同義詞
  • dose

    refers to a single measured amount taken at one time, not the full schedule

  • amount

    more general; lacks the medical-regimen meaning of dosage

  • quantity

    formal and neutral; does not imply medicine or repetition

文法句型

dosage + of + noun

adjective + dosage

用法筆記

Frequently used with the preposition 'of' to name the medicine ('dosage of antibiotics'), and 'for' to name the patient group ('dosage for children'). Contrast with dose: a dose is a single measured amount taken at one time (e.g., 'one 500 mg dose'), while dosage refers to the entire schedule — both the amount and the frequency.

常見錯誤

❌The doctor prescribed a dose of 50 mg twice a day.
✅The doctor prescribed a dosage of 50 mg twice a day.
💡'dose' means a single amount at one time; 'dosage' covers the whole regimen including frequency.
❌I missed my dosage this morning.' (when referring to one pill).
✅I missed my dose this morning.
💡use 'dose' for a single instance of taking medicine.

2. the measured quantity of a non-medical agent, such as a chemical or radiation, t

2.名詞B2
釋義

the measured quantity of a non-medical agent, such as a chemical or radiation, that a living thing receives in a single exposure

例句

Radiation dosage levels near the plant were closely monitored by the safety team.

radiation dosage levels

Mauricio calculates the exact dosage of UV light used to treat skin conditions.

同義詞
  • level

    broader and less precise; does not specify a measured amount

  • concentration

    refers to the strength per unit of volume, not the total amount received

文法句型

dosage + of + noun

adjective + dosage

用法筆記

Common in technical and scientific fields such as radiology, toxicology, and environmental health. The plural form 'dosages' appears more often in this sense than in the medical sense.