IV
4 synonyms and 2 antonyms for IV, grouped by meaning and by how common each one is.
Noun — A drip: the tube, bag and needle used to deliver fluids, medication, blood or nutrients directly into a vein, or the treatment itself.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Synonyms by Meaning
1. noun
A drip: the tube, bag and needle used to deliver fluids, medication, blood or nutrients directly into a vein, or the treatment itself.
“The nurse put an IV in the back of his hand.”
2. adjective
Given directly into a vein.
“He was switched from IV antibiotics to tablets on Thursday.”
Opposites
How to Use Iv
The word patterns that sound natural to a native speaker.
The medical sense is standard in speech and in clinical notes; the numeral is written, not usually spoken as letters.
Etymology
An initialism of intravenous. The unrelated numeral sense comes from the Roman system, where I before V means one less than five.
Full origin of IV →Frequently Asked Questions
What does IV stand for in medicine?
It stands for intravenous, meaning inside a vein. An IV drip delivers fluids or medicine straight into the bloodstream, which works faster than swallowing a tablet and can be used when a patient cannot take anything by mouth.
What is the difference between IV and IM?
IV means intravenous, delivered into a vein for immediate circulation. IM means intramuscular, injected into a muscle where it is absorbed more slowly. Most vaccines are IM; emergency fluids are IV.
Why is four written as IV and not IIII?
Roman numerals use subtraction for certain values, so a smaller numeral placed before a larger one is subtracted: I before V gives five minus one. Traditional clock faces are the famous exception, often showing IIII instead.