Yep. Go to data/text/export_units.txt. All units have 3 entries there that use the unit's disctionary tag (second line of export_descr_units.txt entry) as a base.

Code:
{unit_dictionary_tag}	Unit name

{unit_dictionary_tag_descr}
Long unit description (the one you see on the UI card for example)

{unit_dictionary_tag_descr_short}
Short description (the one you see when you mouse-over units in CB selection menu for example)