pacemaker

• اسم يشير إلى الكيان أو الشخص الذي يضبط الإيقاع أو يقود المثال في مجال ما، ويُطلق على النسيج القلبي الطبيعي الذي ينظم نبضات القلب، وعلى الجهاز الإلكتروني المزروع الذي يؤدي الوظيفة نفسها، كما يُطلق على الفرس التي تحدد وتيرة السباق.

A noun referring to a leading example in a field, a natural cardiac tissue that regulates heartbeat, an implanted electronic device that performs the same function, or a horse that sets the pace in a race.

1. Leading exampleC1formal

   A person or thing that sets a standard of achievement or performance for others to follow.

   مثال يُحتذى به

   • The company is a pacemaker in renewable energy technology.
   • Her research became a pacemaker for future studies in the field.
   • This innovative design is considered a pacemaker in modern architecture.

   المرادفاتbellwetherleaderpacesetterpioneerstandard-bearertrailblazer

   الأضدادalso-ranfollowerlaggardstraggler

2. Natural heart tissueB2formalmedical

   A small group of specialized cells in the heart that generate electrical impulses to regulate the heartbeat.

   منظم ضربات القلب الطبيعي

   • The sinoatrial node acts as the natural pacemaker of the heart.
   • Damage to the heart's pacemaker can cause arrhythmias.
   • The pacemaker cells fire rhythmically to maintain a steady heartbeat.

3. Implanted medical deviceB2formalmedical

   An electronic device surgically implanted to regulate the heartbeat by sending electrical pulses to the heart.

   منظم ضربات القلب

   • The surgeon implanted a pacemaker to correct his irregular heartbeat.
   • Modern pacemakers are small and last for many years.
   • She needs to have her pacemaker checked regularly by a cardiologist.

   المرادفاتartificial pacemakercardiac pacemaker

4. Racing horseC1formalsport

   A horse that sets the speed during a race, often to help another horse achieve a faster time.

   محدد السرعة

   • The pacemaker led the race for the first mile.
   • Trainers often use a pacemaker to help the favorite horse break a record.
   • The pacemaker tired quickly but set a fast early pace.

   المرادفاتpacesetterrabbit