Anagrams of: ALHAYTHAM_

• brittle flat bread eaten at Passover

• an abbreviation for `hazardous material' used on warning signs

• filled or abounding with fog or mist

• indistinct or hazy in outline

• A sign (ء‎ - a stand-alone hamza) used in the written Arabic language representing a glottal stop. Hamza may appear as a stand-alone letter or most commonly diacritically over or under other letters, e.g. أ‎ (over an alif - ا‎), إ‎ (under an alif), ؤ‎ (over a wāw - و‎) or ئ‎ (over a dotless yāʾ - ى‎). The exact seat of hamza is governed by an orthographic rule - "seat of hamza rule".

• resembling a labyrinth in form or complexity

• the basic rhythmic unit in a piece of music

• recurring at regular intervals

• an interval during which a recurring sequence of events occurs

• the arrangement of spoken words alternating stressed and unstressed elements

• natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle)

• (architecture) the repetitive use of a group of visual elements to establish a recognizable pattern

• Talmudic literature that deals with law and with the interpretation of the laws on the Hebrew Scriptures

• A law or tradition established by the Halacha.

• A law/tradition by which Jews live. These are derived from the Torah and from later rabbinic literature.