English Palm dictionary features:

-American English and British English explanations;
-user friendly interface with color formatting of dictionary entries and several color schemes;
-full screen and standard modes to show the word explanation;
-the resident module that allows you to look for the explanations of words from within the currently active application: just select the word and start the resident module;
-the possibility of adding new entries, changing and deleting the existing entries in the powerful built-in editor;
-the possibility to activate/deactivate all changes of entries and synchronize changes with desktop computer;
-search history (list of words that you searched recently) and quick access to it;
-powerful compression technology that enables high data compression ratio (up to 100 000 words in 250 KB) with high access rate;
-quality dictionary databases specially adapted for Palm OS;
availability to install several dictionaries at the same time (you can have the English-English dictionary installed together with translation dictionaries, for example, English-Spanish);
-possibility to install to expansion cards (Memory Stick, Compact Flash, Secure Digital, MMC);

The most useful feature of English-English dictionary for Palm OS is a resident module. It allows you to get the explanation of word without exiting an application that is currently active. Just select the word you would like to find and start the resident module.

Demo-version limitations:
The more you use the unregistered dictionary, the more you see a message about registration procedure.

English-English Palm dictionary contains 144305 entries.