[hahy-droh-frak-ing] /ˈhaɪ droʊˌfræk ɪŋ/
a process in which fractures in rocks below the earth’s surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
[hahy-druh-fawr-muh-ley-shuh n] /ˌhaɪ drəˌfɔr məˈleɪ ʃən/ noun 1. the addition of a hydrogen atom and the to a double bond of a hydrocarbon by reaction with a mixture of carbon monoxide and hydrogen in the presence of a catalyst.
[hahy-druh-fil-ik] /ˌhaɪ drəˈfɪl ɪk/ adjective, Chemistry. 1. having a strong affinity for water. noun 2. . /ˌhaɪdrəʊˈfɪlɪk/ adjective 1. (chem) tending to dissolve in, mix with, or be wetted by water: a hydrophilic colloid Compare hydrophobic hydrophilic hy·dro·phil·ic (hī’drə-fĭl’ĭk) adj. Having an affinity for water; readily absorbing or dissolving in water.
[hahy-druh-fohb] /ˈhaɪ drəˌfoʊb/ noun, Chemistry. 1. a substance.
[hahy-drof-uh-luh s] /haɪˈdrɒf ə ləs/ adjective, Botany. 1. pollinated by the agency of water. 2. . /haɪˈdrɒfɪləs/ adjective 1. (botany) growing in or pollinated by water