To sign the word "acarinosis," use American Sign Language (ASL) and form the letter "A" with your dominant hand, then touch the tip of your index finger to the tip…
To sign the word "acarines", use your dominant hand to create a small circle shape in front of your chest with your index and middle fingers, then bring your hand…
To sign the word acariform, make a "V" shape with both hands and place them horizontally in front of your chest, then bring your hands down and outwards while wiggling…