(narratology) A literary device in which the author writes himself or herself into the story as a character.

plural of self-insertion

plural of insertion reaction

plural of leaf insertion

plural of insertion time

For a nuclear bomb, the time it takes to go from barely critical to optimally critical. It is generally much shorter for an implosion bomb than for a gun-type bomb.

plural of shoe insert

Any device inserted into a shoe to lift the heel of the wearer, for the purpose of making the wearer appear taller, or correcting a limb length discrepancy.

A piece of shaped plastic that may be clipped inside the hole on the middle of a record that has previously been used in a jukebox so that it can be played on a normal record player

To insert oneself. / To insert something into one's own body. / (fandom slang) To insert one's own person into a story as a character.