Respuesta :

Answer:

Heartburn

Explanation:

Heartburn is a 9 letter word.

Heartburn occurs when stomach acid backs up into the tube that carries food from your mouth to your stomach (esophagus).

Normally when you swallow, a band of muscle around the bottom of your esophagus (lower esophageal sphincter) relaxes to allow food and liquid to flow down into your stomach.