Applied to a gastropod (Gastropoda) shell where the sides of the spire are evenly conical and the base is flat.
Trochiform
- International Association for Engineering Geology and the Environment
- International Association for Official Statistics
- International Association for Statistical Computing
- International Association for Statistical Education
- International Association of Survey Statisticians
- International Astronautical Federation
- International Astronomical Union
- International Atomic Time
- International Bank for Reconstruction and Development
- International Biometric Society
- International Brigades
- international candle
- international cartel
- International Celestial Reference Frame
- International Celestial Reference System
- International Chinese Statistical Association
- International Cometary Explorer
- international commodity agreement
- international company
- international competitiveness
- International Congress of Mathematicians
- International Council of Chemical Associations
- International Data Encryption Algorithm
- International Date Line
- international date line