noun
defensive strength; defensive ability
Used in games, sports, military contexts, and metaphorically to describe how well someone or something can withstand attacks or pressure.
この装備は防御力が高い。
This equipment has high defensive strength.
チームの防御力を上げるために練習した。
We practiced to improve the team's defensive ability.
防御 is the general noun for 'defense', while 防御力 specifically quantifies the strength or capability of that defense.
Compound of 防御 (defense) and 力 (power, strength).