'Aalim: scholar
Aayah: the Words or the Signs of Allaah; a verse of the Qur'aan
'Abd: worshipper
Aboo (Abee, Abaa): father of; used as a means of identification
'Adhaan: the Call to Prayer
Bid'ah: innovation introduced into the Deen of Islaam
Bismillaah: In the name of Allaah
Da'eef: weak; unauthentic (narration)
Deen: way of life prescribed by Allaah i.e. Islaam.
Dhikr: remembrance
Eemaan: Faith; to affirm al that was revealed to the Messenger (S) affirming with the heart, testifying with the tongue and acting with the limbs.
Fiqh: the understanding and application of the Sharee'ah from its sources
Hadeeth (pl. Ahadeeth): narration concerning the utterances of the Prophet (S), his actions or an attribute of his.
Halaal: permitted under the Sharee'ah
Haraam: prohibited under the Sharee'ah
'Ibaadah: worship; worship of Allaah.
Radiallaahu 'anhu/'anhaa/'anhum/'anhummaa: may Allaah be pleased with him/her/them/both of them.
Rahimahullaah/Rahimahumullaah: may Allaah bestow His mercy upon him/them.
Sahaabah (Companions): the Muslims who saw the Prophet (S) and died upon Islaam
Salla 'Llaahu 'alayhi wa sallam: a phrase uttered at the mention of Muhammad or other messengers, meaning, "May Allaah's peace and praise be on him"
Salaf: predecessors; the early Muslims; the Muslims of the first three generations: the Companions, the Successors and their successors.
Saheeh: correct; an authentic narration.
Shirk: associating partners with Allaah. This begins when Tawheed becomes blurred and the person fails to recognize the difference between Allaah and that which Allaah created. This leads the person to end up worshipping the creation instead of the Creator.
Sunnah: In its broadest sense, the entire Deen which the Prophet (S) came with and taught, i.e. all matters of belief, rulings, manners and actions which were conveyed by the Companions. It also, includes those matters which the Prophet (S) established by his sayings, actions and tacit approval - as opposed to bid'ah (innovation).
Soorah: a chapter of the Qur'aan
Subhaanahoo wa ta'aalaa: a phrase unttered at the mention of Allaah, meaning, "He is exalted above all weakness or indignity."
Tafseer: Explanation of the Qur'aan
Taqwa: Taqwa is acting in obedience to Allaah, hoping for His mercy upon light from Him and Taqwa is leaving acts of disobedience, out of fear of Him, upon light from Him.
Tawheed: Allaah is the only Lord of creation. He, alone, is their Provider and Sustainer. Allaah has Names and attributes which none of the creation share and Allaah is to be singled out for worship, alone. Tawheed is maintaining the Oneness of Allaah in all the above mentioned categories. Islaam makes a clear distinction between the Creator and the creation.