1. Containing small amounts of other chemicals, hence slightly impure
   "technical-grade sulphuric acid"
   - technical grade

See also: impure

• insoluble
• insolvable
• insolvency
• insolvent
• insomnia
• insomniac
• insomuch
• insouciance
• insouciant
• inspan
• inspect
• inspection
• inspection and repair
• inspector
• inspector general
• Inspector Maigret
• inspectorate
• inspectorship
• inspiration
• inspirational
• inspirationally
• inspiratory
• inspire
• inspired
• inspirer