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What does HIO stand for?

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Rank Abbr.Meaning
HIOHole-In-One (chiropractic)
HIOHealth Insuring Organization
HIOHarvard International Office
HIOHire Immigrants Ottawa (Canada)
HIOHealth Information Organization
HIOHorse Industry Organization
HIOHogere Informatica-Opleiding
HIOHorse Inspection Organization (inspects walking horses at horse shows)
HIOHigh Income Opportunities
HIOHigh Intensity Operations

Note: We have 19 other definitions for HIO in our Acronym Attic