pentagonpentagon /ˈpɛntəˌgɑn/ noun [countable] 
math, geometry a flat shape with five sides—pentagonal /pɛnˈtægənl/ adjective
math, geometry a flat shape with five sides—pentagonal /pɛnˈtægənl/ adjective- conscientiously
- conscientiousness
- conscientious objector
- conscious
- -conscious
- consciously
- consciousness
- consciousness raising
- consciousness-raising
- conscript
- conscription
- consecrate
- consecrated
- consecration
- consecutive
- consecutive angles
- consecutive integers
- consecutively
- consensual
- consensus
- consensus builder
- consensus building
- consent
- consenting adult
- consequence