CYLON...Battlestars?

Battlestar Galactica ("The Gun on Ice Planet Zero")
 - aired on 10/22/78 and 10/29/78 

The Battlestar Galactica two-part story "The Gun on Ice Planet Zero" is a rip-roaring, action-packed entry in BSG lore.  This was the very first story developed for the series which probably accounts for an interesting verbal "blooper" - repeated 3 times throughout this story!

A Cylon Base Star (a.k.a. base ship)

It had been established in previous episodes, that the formidable Cylon command base (often shown in packs of three) is called a "Base Star" (or base ship).  For some reason - and for this story only - Adama, Apollo and Athena refer to Cylon Base Stars as CYLON BATTLESTAR(s).  This sounds very odd - and comes off even worse when the DVD Subtitles are activated.  Some photos below:

Adama: ("We've picked up CYLON BATTLESTARS
approaching....")

Apollo: ("...until the CYLON BATTLESTARS
can reach and destroy it.")

Athena: ("...but CYLON BATTLESTARS
are entering the quadrant.")

 ...but all is not lost!  Towards the end of Part 2, Rigel (and the writers!) **suddenly** remember the proper name - Cylon BASE STAR(s)!:

Rigel: ("Cylon BASE STARS, quadrant Epsilon.")
GO Rigel!  :-)

Battlestar Galactica is copyright (c) NBC / Universal; created by Glen A. Larson.