prolate

Adjective

• rounded like an egg

• having the polar diameter greater than the equatorial diameter
  • a prolate spheroid is generated by revolving an ellipse about its major axis
    

Related words

• Synonyms: 
  egg-shaped , elliptic , elliptical , oval , oval-shaped , ovate , oviform , ovoid , watermelon-shaped
• Antonyms: 
  oblate , pumpkin-shaped