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Glite Dictionary
anhydrous

anhydrous

1 9.8
Without water, often describing chemical substances used in labs
  • adjective
  • /ænˈhaɪdrəs/
  • Specialized
translation icon : anhidro
  • Theft of anhydrous ammonia was once easy because distribution centers and farms seasonally kept it in unguarded tanks.
  • anhydrous ammonia
  • anhydrous ammonia tank

Examples

  • Chemical engineers often use anhydrous compounds because they provide more accurate reactions without the interference of water.

  • I can still remember the first anhydrous ammonia truck that began operating in our county.

    Blog text (10)

  • Greater efforts are now made to safeguard anhydrous ammonia.

    Academic text (2006)

  • The association has published a new set of standards for tank cars that carry anhydrous ammonia and chlorine.

    Academic text (2007)

  • As another example, a recent anhydrous ammonia theft near the Kentucky study area caused a massive leak, forcing the evacuation of nearby residents.

    Academic text (2006)

  • Kentucky participants also discussed local theft of anhydrous ammonia or mentioned stealing it in Illinois and Indiana.

    Academic text (2006)

  • Participants identified a variety of hazards linked to mishaps while stealing anhydrous ammonia.

    Academic text (2006)

  • Calcium sulfate, also known as anhydrous gypsum, is used commercially in the manufacture of cement, plasterboard, and glass.

    Academic text (2007)

  • In laboratories, anhydrous substances are essential for experiments that require absolute dryness.

  • When preparing the experiment, the scientist ensured that all the reagents were anhydrous to avoid any unwanted reactions.

Synonyms

waterless
vsanhydrous
3 3.4

A place with no water that is very dry like a desert

is a technical term for lack of water in a compound or crystal
unhydrated
vsanhydrous
  • Specialized
7.9

A substance that is not mixed with water and contains no water

refers to absence of water inside crystal structures specifically
nonaqueous
vsanhydrous
  • Specialized
7.3

Not containing water or using water to dissolve things

means absence of water molecules rather than solvent choice

Antonyms

aqueous
5 6.8

Containing water or made with water, like a liquid mix

hydrous
  • Specialized
1 8.9

Containing water inside its structure, like many minerals and crystals

hydrated
  • Specialized
4.4

Containing water inside its solid crystals, as some salts and minerals

Compounds

eucerin anhydrous
  • Specialized
9.1

An ointment without water used to make medicine for the skin

eucerine anhydrous
  • Specialized
9.1

A thick, water-free substance that you use to mix medicines for the skin

How Dry

anhydrous
  • Specialized
1 9.8
dry
791 1.0
damp
11 1.0
wet
1 1.0

Surface Forms

anhydrous positive

Morphology

anhydrous = hydrous (semi-transparent) = an + hydrous

Formed from the negative prefix 'an-' plus 'hydrous' ('containing water'); the pieces are regular but 'hydrous' is a technical term that may be unfamiliar to many learners.

Etymology

The word anhydrous comes from the Greek parts an- 'not' and hydr- 'water', the same hydr- you see in hydrant or hydrogen. So an anhydrous substance is 'without water', used in chemistry for a material that contains no water.