lookup-el software package provides emacsen interface to electronic dictionaries, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install lookup-el
lookup-el is installed in your system.
Make ensure the lookup-el package were installed using the commands given below,
$ sudo dpkg-query -l | grep lookup-el *
You will get with lookup-el package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Text Processing |
| Package | lookup-el |
| Version | 1.4.1-12 |
| Description | emacsen interface to electronic dictionaries |
| Sub Section | Text |