Definitions by kittens Σ:3

Firestar 

He was born a kittypet, but Bluestar allowed him to join the forest cats. After Bluestar's death, Fireheart became the leader, and was given the name Firestar. He and Sandstorm became mates and had two kits, Leafpool and Squirrelflight.

Firestar's best friend is Graystripe.

Firestar by kittens Σ:3 August 24, 2014

Xe

The chemical symbol for xenon (atomic number: 54).

Xe is for xenon.

Xe by kittens Σ:3 July 22, 2014

Yo ho ho 

Pirate laughter

Fifteen men on the dead man’s chest,
Yo ho ho, and a bottle of rum!
Drink and the devil had done for the rest,
Yo ho ho, and a bottle of rum!

Yo ho ho by kittens Σ:3 July 8, 2014

Fluorine

Fluorine is an extremely reactive and poisonous chemical element with atomic number 9.

The lightest halogen and most electronegative element, fluorine exists as a pale yellow diatomic gas at standard conditions.

Fluorine by kittens Σ:3 July 8, 2014

Arrrr 

Used by a pirate to show excitement or happiness. Also used occasionally as 'yes,' instead of Aye.

Arrrr! We be lucky pirates, maties! We've found some burried gold!

Arrrr by kittens Σ:3 July 7, 2014

wing it 

To do something on the spot or without preparation.

Batman: We'll wing it...

That's a bat-pun.

wing it by kittens Σ:3 July 7, 2014

Atomic number 

The number of protons in an atom's nucleus, which define most of the atom's properties, including what element it is.

The lightest element is hydrogen, which has an atomic number of one.

Atomic number by kittens Σ:3 July 6, 2014