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Haematology (or hematology) A medical specialization concerned with the study
of diseases related to blood which includes problems with the blood cells, platelets, spleen, bone marrow, blood vessels, lymph nodes and the proteins involved
in bleeding/clotting
Hereditary or inherited disease Disease inherited genetically
Hibernation State of inactivity due to lower metabolic rate
Human anatomy Specialty of medical science which deals with body structure of
humans
Homeostasis The state of steady internal conditions conserved by living things
Hybrid vehicles Vehicles that use two sources for energy
Hydrocarbon Chemical compound consisting only hydrogen and carbon
Hydrographic events Events that alter the condition or current of waters in surface
water bodies
Hydrologic cycle Continuous circulation of water throughout the atmosphere and
earth
Hydrological disasters Events caused by variation in the normal water cycle and/
or overflow of surface water bodies
Hypoxic events Events that lead to a deficiency of oxygen
Iatrogenic disease Disease caused by medical intervention
ICD-10 International Classification of Disease, 10th revision
Idiopathic disease Disease with no identifiable cause
Ignitable Capable of burning
Ignition point Lowest temperature at which a volatile material will be vaporized
into a gas which ignites without external ignition source is called ignition point
Immobilization (in the context of solid waste) Converting of waste into a waste
form by means of solidification embedding or encapsulation
Immunology A medical specialization that deals with the immune system
In situ conservation Conservation of natural habitats and ecosystems in their natural surroundings
Incidence rate Frequency with which an incidence (like new cases of illness)
occurs in a population over a particular period of time
Incinerator A furnace used for incineration
Incompressible flow Flow in which the fluid density is constant throughout the
flow
Incompressible fluid Fluid whose density is constant everywhere
Incurable disease Disease that cannot be cured
Indicator Factor that identifies and communicates a system’s status
Indoor air pollution Air pollution that occurs within enclosed spaces or buildings
Inertia Opposition to any change in velocity of an object
Infant mortality Death of a child younger than one year of age
Infant mortality rate Number of infant mortality divided by the number of live
births in that population during the same time period
Infectious disease Any disease caused by microbial agents
Ingestion Swallowing
Inhalation Breathing
Glossary
Haematology (or hematology) A medical specialization concerned with the study
of diseases related to blood which includes problems with the blood cells, platelets, spleen, bone marrow, blood vessels, lymph nodes and the proteins involved
in bleeding/clotting
Hereditary or inherited disease Disease inherited genetically
Hibernation State of inactivity due to lower metabolic rate
Human anatomy Specialty of medical science which deals with body structure of
humans
Homeostasis The state of steady internal conditions conserved by living things
Hybrid vehicles Vehicles that use two sources for energy
Hydrocarbon Chemical compound consisting only hydrogen and carbon
Hydrographic events Events that alter the condition or current of waters in surface
water bodies
Hydrologic cycle Continuous circulation of water throughout the atmosphere and
earth
Hydrological disasters Events caused by variation in the normal water cycle and/
or overflow of surface water bodies
Hypoxic events Events that lead to a deficiency of oxygen
Iatrogenic disease Disease caused by medical intervention
ICD-10 International Classification of Disease, 10th revision
Idiopathic disease Disease with no identifiable cause
Ignitable Capable of burning
Ignition point Lowest temperature at which a volatile material will be vaporized
into a gas which ignites without external ignition source is called ignition point
Immobilization (in the context of solid waste) Converting of waste into a waste
form by means of solidification embedding or encapsulation
Immunology A medical specialization that deals with the immune system
In situ conservation Conservation of natural habitats and ecosystems in their natural surroundings
Incidence rate Frequency with which an incidence (like new cases of illness)
occurs in a population over a particular period of time
Incinerator A furnace used for incineration
Incompressible flow Flow in which the fluid density is constant throughout the
flow
Incompressible fluid Fluid whose density is constant everywhere
Incurable disease Disease that cannot be cured
Indicator Factor that identifies and communicates a system’s status
Indoor air pollution Air pollution that occurs within enclosed spaces or buildings
Inertia Opposition to any change in velocity of an object
Infant mortality Death of a child younger than one year of age
Infant mortality rate Number of infant mortality divided by the number of live
births in that population during the same time period
Infectious disease Any disease caused by microbial agents
Ingestion Swallowing
Inhalation Breathing
Glossary