What does io stand for?

Indonesia - pt (Portuguese Timor) used in records cataloged before January 1978 - MARC country of publication code - Library of Congress (LCCP)

Iodo - As substituent on nucleoside - Biochemistry

Ionium - Th²³⁰, radioactive isotope of thorium

Air Paris - ICAO designator (AD)

British Indian Ocean Territory - ANSI two-letter standard code (CNC)

Chagos Islands (SAUS)

Icendiary Oil (SAUS)

Ice Plow (SAUS)

Identification Officer (SAUO)

Illegal Operation (SAUS)

Illuminator Operator (SAUS)

Image Orthicon

Immediate Office (COE)

Immediate Order (VLIE)

Imperial Oil (SAUO)

Incendiary Oil (SAUS)

Incisal Opening - Medicine (MAE)

Incoming Orders

Independent Option

Indexing Operation (SAUS)

Index Operator (SAUS)

Indian Ocean

Indian Ocean Region - Communications term (DCT)

India Office - British

Indirect Object - Linguistics (IEL)

Indonesia - NCIC country-territory code (NCIC)

Industrial Operations (MCD)

Industry Outstanding (SAUO)

Infant Orphan - British (ROG)

Infantry Officer - British military (DMA)

Inferior Oblique - Muscle - Anatomy

Inferior Olive - Neuroanatomy

Information Objectives (COE)

Information Officer

Information Operation - Military

Information Operations Section - Defence Research and Development Canada (RCD)

Information Organization (SAUS)

Information Overload

Infrastructure Officer - Emergency Management (EMA)

Initial Only (CARL)

Initial Opening - Pressure - Measurement (DAVI)

Initial Order (SAUS)

Injection Opportunity (ACAE)

Injector Orifice

In Order

Input/Output Inc. - NYSE symbol

Insh Office (SAUS)

Inside-Out - Vesicle (DB)

Inspecting Officer (ODA)

Inspection Opening (ADA)

Inspection Order (NATG)

Inspection Outline

Instant Ocean (NOAA)

Institute for Oceanography - Environmental Science Services Administration

Institute of Ophthalmic Opticians (SAUO)

Intake Opens - Valve position

Integrated Optics (SAUS)

Intelligence Office - or Officer

Intelligence Oversight (DOMA)

Intensive Observation (STED)

Interest Only - Finance

Interest Only Strip - Mortgage security

Interior Orientation (SAUS)

Intermediary Organization - Physiology

Intermediate Objective - Military technology (DDF)

Internal Os - or Orifice - Medicine (DAVI)

International Octal (IAA)

International Officer - Military technology (DDF)

International Organizations - A publication

Interpersonal Orientation (BARN)

Interpreter Officer - Military - British

Interpretive Operation

Intestinal Obstruction - Medicine

Intraocular

Inventory Objective

Inverted Original (SAUS)

Investigating Officer

Inward Operator (VLIE)

Ion Engine (AAG)

Iowa

Irish Office

Iron Overload - Medicine

Issue Order (SAUO)

Issuing Office

Iterative Operation