Pellucid is an adjective that means clear or easily understood.
The Latin word lucere (LOO chair ay) means shine. Combined with per, for ‘through,’ we get shine through, meaning clear. Our word of the day may be used to describe something like water that is clear in a literal sense, or something like an idea or a passage of writing that is clear in a figurative sense.
The film critic’s writing was awfully clever, but I couldn’t understand what he was actually trying to say about the movie. I would have preferred he express himself with more pellucid prose.