[ 'gleɪsɪəl , -ʃ(ə)l ]
■ adjective
1》 relating to ice, especially in the form of glaciers.
2》 extremely cold.
↘unfriendly or unemotional.
3》 Chemistry denoting pure organic acids (especially acetic acid) which form ice-like crystals on freezing.
■ noun Geology a ~ period.
Derivatives
~ly adverb
Origin
C17: from Fr., or from L. ~is 'icy'.