The variety of shielding gases used in arc welding can be a confusing topic. However, the use of an external shielding gas is a necessary component for some processes, as it is a requirement for surrounding and protecting the arc and molten weld metal from contamination by the atmosphere.
Consonant Digraphs. Second Grade. Spelling/Phonics. Consonant Digraphs Consonant digraphs are two (or three) letters that come together to make one sound. The difference between blends and digraphs is that blends are two letters that make two sounds and digraphs make one sound.onsonant Digraphs. Second Grade. Spelling/Phonics. Consonant Digraphs Consonant digraphs are two (or three) letters that come together to make one sound. The difference between blends and digraphs is that blends are two letters that make two sounds and digraphs make one sound.
Noun. 1. consonant-a speech sound that is not a vowel. speech sound, phone, sound - (phonetics) an individual sound unit of speech without concern as to whether or not it is a phoneme of some language. alveolar, alveolar consonant, dental, dental consonant-a consonant articulated with the tip of the tongue near the gum ridge. obstruent-a consonant that is produced with a partial or complete blockage of the airflow from the lungs through the nose or mouth.