There are two types of Apraxia. Developmental (or Childhood Apraxia of speech) or acquired Apraxia. Childhood apraxia of speech (CAS) is a neurological childhood speech sound disorder that involves impaired precision and consistency of movements required for speech production without any neuromuscular deficits (ASHA, 2007a, Definitions of CAS section, para. 1). Both are the inability to plan volitional motor movements for speech production in the absence of muscular weakness. Apraxia is not a result of sensory problems, or physical issues with the articulatory structures themselves, simply the way the brain plans to move them.
If you are new to the term, it simply means to be powerful and persuasive to the listener, argue and make your points in a striking way as to win their favour. Your goal is to capture their attention and bring it to the important point of focus which is the centre of your present work. With practice your rhetoric can increase tremendously, by doing something so small as just noticing your own conversations and own speaking, even when in a casual way and to a friend, is a task you can set yourself to learn a great deal. Just by observation and awareness of yourself and what it is that you are trying to do, you can greatly help the progress along the way with keeping some few very important things in mind.