ionosphere 1
noundomain: location
Princeton WordNet [ver.3.1]
'%3e%3cpath%20d='M0,0%20v30%20h60%20v-30%20z'%20fill='%23012169'/%3e%3cpath%20d='M0,0%20L60,30%20M60,0%20L0,30'%20stroke='%23fff'%20stroke-width='6'/%3e%3cpath%20d='M0,0%20L60,30%20M60,0%20L0,30'%20clip-path='url(%23t)'%20stroke='%23C8102E'%20stroke-width='4'/%3e%3cpath%20d='M30,0%20v30%20M0,15%20h60'%20stroke='%23fff'%20stroke-width='10'/%3e%3cpath%20d='M30,0%20v30%20M0,15%20h60'%20stroke='%23C8102E'%20stroke-width='6'/%3e%3c/g%3e%3c/svg%3e)
EnglishDefinition
the outer region of the Earth's atmosphere; contains a high concentration of free electrons
Hypernym
region 1
noun
the extended spatial location of something
Part_meronym
atmosphere 3
noun
the mass of air surrounding the Earth
D-layer 1
noun
the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
Appleton layer 1
noun
the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length
EnglishPart_holonym
atmosphere 3
noun
the mass of air surrounding the Earth
D-layer 1
noun
the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
Appleton layer 1
noun
the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length
