co·e·ter·nal 
(kō′ĭ-tûrnəl)
(kō′ĭ-tûrnəl)adj.
Equally or jointly eternal.
co′e·ternal·ly adv.
- electric monopole
- electric potential
- electric potential gradient
- electric ray
- electrifiable
- electrification
- electrifier
- electrify
- electrifyingly
- electro-
- electroanalysis
- electroanalytic
- electroanalytical
- electrocardiogram
- electrocardiograph
- electrocardiographic
- electrocardiographically
- electrocardiography
- electrocautery
- electrochemical
- electrochemical cell
- electrochemically
- electrochemist
- electrochemistry
- electrochromic