fluid
- 01 B2 Upper Intermediate
n.any substance that flows easily and takes the shape of its container, such as water or air.
n.a substance, such as a liquid, gas, or plasma, that deforms under shear stress and conforms to the shape of its container.
Simple“The mechanic checked the levels of the brake fluid in the car.”
In context“The laboratory equipment was designed to measure the viscosity of various industrial fluids under extreme pressure conditions.”
- 02 C1 Advanced
n.liquids given to a patient, often through a tube in the arm.
n.intravenous solutions administered to a patient to maintain hydration or deliver medication.
Simple“The doctor said the patient needed more fluids to recover from the fever.”
In context“The nursing staff monitored the administration of intravenous fluids to ensure the patient remained stable after the surgery.”
SynonymssolutionIV - 03 B2 Upper Intermediate
adj.likely to change; not fixed or settled.
adj.subject to change or transition; characterized by a lack of fixed structure.
Simple“The travel plans are still fluid because we haven't booked the flights yet.”
In context“The political situation remained fluid as negotiators struggled to reach a consensus before the midnight deadline.”
- 04 B2 Upper Intermediate
adj.moving in a smooth and beautiful way.
adj.characterized by a smooth, elegant, and continuous quality of motion.
Simple“The dancer's movements were fluid and graceful.”
In context“The athlete's fluid running style allowed him to maintain a high pace without appearing to exert significant effort.”
- 05 C1 Advanced
adj.describes money or assets that can be used or moved easily.
adj.referring to assets that are easily converted into cash without significant loss of value.
Simple“The company needs to keep some fluid assets to pay for unexpected repairs.”
In context“The investment firm advised the client to maintain a portion of their portfolio in fluid capital to respond to market volatility.”
“Ebola is rare but highly contagious and can be contracted from body fluids such as vomit, blood or semen, including from dead bodies, and from contaminated surfaces and materials such as bedding and clothing.”
“Six to eight glasses of fluid a day is normally recommended by the NHS, , external and in a heatwave you could need a lot more.”
From Middle English fluid, from Latin fluidus (“flowing; fluid”), from Latin fluō (“to flow”), from Proto-Indo-European bʰleh₁- (“to swell; surge; overflow; run”). Akin to Ancient Greek φλύειν (phlúein, “to swell; overflow”). Not related to English flow, which is a native, inherited word from plew-, but is distantly related from English bleat.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.