Keyword
sound
Info
FrequencyTop 100-200
Type
Kyōiku (1st grade) 
?
KankenLevel 10
Heisig518
Readings
おん
(38%)
おと
(34%)
(26%)
Composed of
standing up
sun
Mnemonic

Imagine physically standing on the surface a sun. I'd be so hot that the only sound you'd be making is a horrific scream. "Aaaaaaaaaaaaah! IT BURNS!"

Used in kanji (10 in total)
idea
echo
dark
pitch-black darkness
Used in vocabulary (826 in total)
sound; noise; note; fame; Chinese-derived character reading
sound of footsteps; sense or sign that something is approaching
to make a sound; to give off a sound; to hear a sound
Examples (200 in total)
What was that sound?
What was that noise?
What's that sound?