1. Belonging to bark; consisting of or resembling bark; external; the cortical substance, the exterior of the brain and kidneys, which like bark encircles the interior.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• partical,
• cretical,
• portigal,
• portocal,
• artical,
• crtical,
• martical,
• corjial,
• portical,
• curvical,
• crytical,
• cruical,
• corticle,
• carnical,
• criical,
• crritical,
• virtical,
• corical,
• notical,
• cornical

• court card,
• critical,
• cuticle,
• cordial,
• comical,
• cortisol,
• cortically,
• vertical,
• corticium,
• corticoid.

The adjective form of the word "cortical" is "cortical".

The plural form of the word "cortical" is "corticals".

The singular form of the word "cortical" is "cortex"