Baillonnella is a genus of fungi that belongs to the family Hygrophoraceae. The first part of the word, "baillon," derives from the name of the French botanist Louis Antoine François Baillon, who described the genus in 1894. The second part, "nella," is a diminutive suffix often used in scientific names. The pronunciation of "baillonnella" is [biːjɒnɛlə], with the stress on the second syllable. The double-L and double-N in the word follow the typical spelling conventions in French, which use a double consonant to indicate a shorter vowel sound.