floatability

IPA/ˌfləʊ.təˈbɪl.ə.ti/

floatability — noun

1. the physical ability of a material or object to remain on or near the surface of

1.nounC1
Definition

the physical ability of a material or object to remain on or near the surface of a liquid instead of sinking down into it

Example

The floatability of the new foam was tested in a tank of salt water.

passive: floatability + of + noun + was tested

Bao's team improved the floatability of recycled plastic by adding tiny air pockets.

Common collocations
  • floatability of [substance/material]
  • good / poor / excellent floatability
  • test / measure / evaluate floatability
  • improve / enhance floatability
Synonyms
  • buoyancy

    the everyday term for the upward force that keeps things floating; far more common than 'floatability' in general English

  • buoyance

    a rarer variant of 'buoyancy', mostly found in older or highly formal texts

  • flotability

    an alternative spelling used in some engineering and mineral-processing publications

Antonyms
  • sinkability

    a rare technical term for the tendency of an object to sink rather than float

Grammar Patterns

floatability + of + noun phrase

Usage Note

Uncountable noun — do not use with 'a' or in plural form. In everyday situations (a person floating in a pool, a boat staying on the water), 'buoyancy' is the more common word. 'Floatability' appears mainly in materials science, mineral processing, and engineering contexts.

Common Mistakes

The boat has good floatability.
The boat has good buoyancy.
For everyday objects such as boats and swimmers, 'buoyancy' is the natural word; 'floatability' is mainly used in scientific and technical writing.

Word family

Synonym discussion

Sense: noun/1

'Floatability', 'buoyancy', 'buoyance', and 'flotability' all relate to the ability to float, but they differ in register and domain. 'Buoyancy' is by far the most common word in everyday English — a swimmer experiences buoyancy, a boat has buoyancy, and it appears in physics classrooms. 'Floatability' is a more technical term, used in materials science and mineral processing to describe the property of a specific substance (e.g., the floatability of crushed ore). 'Buoyance' is a rarer variant of 'buoyancy' and is mostly encountered in older or highly formal texts. 'Flotability' is an alternative form of 'floatability' used in some engineering contexts. In everyday speech, choose 'buoyancy'; in a technical report about a material's floating property, 'floatability' or 'flotability' is the appropriate choice.

buoyancy ↗buoyanceflotability

Common collocations

Nouns

Phrases

  • level of floatability
  • degree of floatability

Prepositions

Etymology

Old EnglishEnglish

Formed in English from the verb 'float' (from Old English 'flotian', meaning to rest on the surface of a liquid), the suffix '-able' (meaning 'capable of being'), and the noun suffix '-ity' (forming an abstract noun that indicates a quality or state). The word first appeared in technical writing in the early 20th century.