Words in english starting with A

• American sycamore — Noun – English ～ very large spreading plane tree of eastern and central North America to Mexico
• Arizona sycamore — Noun – English ～ medium-sized tree of Arizona and adjacent regions having deeply lobed leaves and collective fruits in groups of 3 to 5
• Apodemus sylvaticus — Noun – English ～ nocturnal yellowish-brown mouse inhabiting woods and fields and gardens
• Anthriscus sylvestris — Noun – English ～ coarse erect biennial Old World herb introduced as a weed in eastern North America
• Anemone sylvestris — Noun – English ～ Eurasian herb with solitary nodding fragrant white flowers
• Angelica sylvestris — Noun – English ～ European herb with compound leaves and white flowers; adventive on Cape Breton Island
• Arthur Symons — Noun – English ～ English poet (1865-1945)
• Asperger's syndrome — Noun – English ～ a psychiatric disorder usually noted during early school years; characterized by impaired social relations and by repetitive patterns of behavior
• acquired immune deficiency syndrome — Noun – English ～ a serious (often fatal) disease of the immune system transmitted through blood products especially by sexual contact or contaminated needles
• acute organic brain syndrome — Noun – English ～ any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)
• Addison's syndrome — Noun – English ～ a glandular disorder caused by failure of function of the cortex of the adrenal gland and marked by anemia and prostration with brownish skin
• Adams-Stokes syndrome — Noun – English ～ recurrent sudden attacks of unconsciousness caused by impaired conduction of the impulse that regulates the heartbeat
• adult respiratory distress syndrome — Noun – English ～ acute lung injury characterized by coughing and rales; inflammation of the lungs which become stiff and fibrous and cannot exchange oxygen; occurs among persons exposed to irritants such as corrosive chemical vapors or ammonia or chlorine etc.
• anterior synechia — Noun – English ～ adhesion between the iris and the cornea
• articulatio synovialis — Noun – English ～ a joint so articulated as to move freely
• alarm system — Noun – English ～ a device that signals the occurrence of some undesirable event
• audio system — Noun – English ～ a system of electronic equipment for recording or reproducing sound
• auditory system — Noun – English ～ the sensory system for hearing
• articulatory system — Noun – English ～ the system of joints in the body
• automatic data processing system — Noun – English ～ a system of one or more computers and associated software with common storage

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