hemihydrate: meaning, definition, pronunciation and examples
C2Highly technical / Scientific
Quick answer
What does “hemihydrate” mean?
a crystalline substance containing half a molecule of water per molecule of the compound, often referring to a specific form of calcium sulphate (plaster of Paris).
Audio
Pronunciation
Definition
Meaning and Definition
a crystalline substance containing half a molecule of water per molecule of the compound, often referring to a specific form of calcium sulphate (plaster of Paris).
Any hydrate in which the ratio of water molecules to the molecules of the principal substance is 1:2.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling and pronunciation follow standard British/American conventions.
Connotations
Purely technical, neutral in both dialects.
Frequency
Extremely low frequency in general discourse but equally common in relevant technical fields in both regions.
Grammar
How to Use “hemihydrate” in a Sentence
The compound exists as a hemihydrate.X forms a hemihydrate upon drying.The hemihydrate of Y is highly soluble.Vocabulary
Collocations
Examples
Examples of “hemihydrate” in a Sentence
verb
British English
- The sample will hemihydrate under these controlled humidity conditions.
- Heating the dihydrate caused it to hemihydrate.
American English
- The compound hemihydrates readily upon exposure to dry air.
- The process is designed to hemihydrate the gypsum.
adverb
British English
- No common adverbial usage.
American English
- No common adverbial usage.
adjective
British English
- The hemihydrate form sets more quickly.
- We analysed the hemihydrate crystals.
American English
- The hemihydrate phase is metastable.
- This is a hemihydrate powder with specific properties.
Usage
Meaning in Context
Business
Rare, except in specific industries like construction materials or pharmaceutical manufacturing.
Academic
Common in chemistry, geology, and pharmaceutical science papers.
Everyday
Virtually never used.
Technical
Standard term for describing specific hydrated states of compounds, crucial in formulation and materials property specification.
Vocabulary
Synonyms of “hemihydrate”
Strong
Neutral
Weak
Vocabulary
Antonyms of “hemihydrate”
Watch out
Common Mistakes When Using “hemihydrate”
- Misspelling as 'hemi-hydrate' (hyphenated). The standard form is one word.
- Incorrect plural: 'hemihydrates' is correct.
- Confusing it with other stoichiometric hydrates like monohydrate.
FAQ
Frequently Asked Questions
Yes, plaster of Paris is the common name for the hemihydrate form of calcium sulphate (CaSO₄·½H₂O).
Yes, in technical contexts it can mean 'to form or convert into a hemihydrate'.
The opposite in terms of water content could be an 'anhydrate' (no water) or a 'dihydrate' (two water molecules per formula unit).
Almost never. It is a highly specialised scientific term.
a crystalline substance containing half a molecule of water per molecule of the compound, often referring to a specific form of calcium sulphate (plaster of Paris).
Hemihydrate is usually highly technical / scientific in register.
Hemihydrate: in British English it is pronounced /ˌhɛmɪˈhaɪdreɪt/, and in American English it is pronounced /ˌhɛmɪˈhaɪdreɪt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “No common idioms.”
Learning
Memory Aids
Mnemonic
Think 'HEMI' (like half a car engine) + 'HYDRATE' (water): a hydrate with half the water.
Conceptual Metaphor
A precise recipe: like adding exactly one cup of water for every two cups of flour.
Practice
Quiz
What does 'hemi-' in 'hemihydrate' signify?