Ignition Weapon

An Ignition Weapon is a powerful type of weapon used in the Tower.

When activated(시동, shidong, 始動; "ignite" or "start engine"), it releases vast amounts of power, enhancing its speed, damage, etc.

A branch form of Ignition weapons are Compression Weapons.

In Ignition mode, certain Compression weapons like the Green April are capable of becoming far more powerful when decompressed.

Ignition weapons are supposedly quite rare on the lower Floors of the Tower, as Androssi was very surprised when she first saw Narumada.

An incredibly famous and powerful group of Ignition weapons are called the 13 Month Series.

While some Ignition weapons such as those in the 13 Month Series do have souls, not all of them do. They are all constructed with special shinsoo.

Living Ignition Weapons, living beings with an Ignition Weapon inserted in them, have also been created after extensive research and experimentation. The current known Living Ignition Weapons are the Devils Horyang, and Cassano, their 'brother' Beta and tentatively, Jyu Viole Grace himself, refered to as the "complete product".

Other examples
Vagnil is a spear which you can use like a bow and when ignited, becomes a B-Rank weapon.

Arma de Ignición