This package (aspell-pt) is actually a combination of two different
word lists.

Portuguese (pt_PT) dictionary for GNU Aspell is freely available under the terms of GPLv2/LGPL/MPL licenses, by this order.
Copyright (c) $YEAR$ by José João Almeida; Alberto Simões; Rui Vilela

Brazilian Portuguese (pt_BR) dictionary for GNU Aspell is freely available under the terms of the GNU GPL.
Copyright (C) $YEAR$ by Leonardo Ferreira Fontenelle; Raimundo Santos Moura

The doc folder contains specific information for each dictionary.

See COPYING for full license.