anhydride
UK[ænˈhaɪdraɪd]US[ænˈhaɪdraɪd]
n
a chemical compound formed by the removal of water from another compound, especially an acid.
Morpheme Breakdown
an
hydr
ide
an
without
hydr
water
ide
chemical suffix
Etymology
the word 'anhydride' is a modern scientific term constructed from greek components to precisely describe a chemical concept. the prefix 'an-' (from greek, meaning "without") is combined with the root 'hydr-', derived from the greek word 'hydōr' for "water". the suffix '-ide' is a conventional ending in chemical nomenclature, often indicating a class of compounds. thus, the term literally means "a compound without water," which directly and logically reflects its definition as a substance formed by the removal of water from another, such as an acid.
Analysis
Structure: an (without) + hydr (water) + ide (chemical suffix)
an: from greek, a prefix meaning "without" or "not".
hydr: from greek 'hydōr', meaning "water".
ide: a suffix used in chemistry to denote a binary compound or a compound derived from another.
Examples
acetic anhydride is a key reagent in the synthesis of aspirin.
the reaction produced the corresponding acid anhydride as a white solid.
phthalic anhydride is widely used in the production of plastics.