Webster's 1828 Dictionary
FELDSPATHIC
a.Pertaining to feldspar, or consisting of it.
Webster's 1913 Dictionary
FELDSPATHIC; FELDSPATHOSE
FELDSPATHIC; FELDSPATHOSE Feld *spath "ic, Feld *spath "ose, a.
Defn: Pertaining to, or consisting of, feldspar.
New American Oxford Dictionary
feldspathic
feld spath ic |fel (d )ˈspaTHik ˌfɛlzˈpæθɪk | ▶adjective Geology (of a mineral or rock ) of the nature of or containing feldspar.
feldspathoid
feld spath oid |fel (d )ˈspaTHˌoid ˌfɛlzˈpæθɔɪd | ▶noun Geology any of a group of minerals chemically similar to feldspar but containing less silica, such as nepheline and leucite. DERIVATIVES feld spath oid al |ˌfel (d )spaTHˈoidl |adjective
Oxford Dictionary
feldspathic
feldspathic |fɛldˈspaθɪk | ▶adjective Geology (of a mineral or rock ) of the nature of or containing feldspar.
feldspathoid
feldspathoid |ˈfɛl (d )spəˌθɔɪd | ▶noun Geology any of a group of minerals chemically similar to feldspar but containing less silica, such as nepheline and leucite. DERIVATIVES feldspathoidal |-ˈθɔɪd (ə )l |adjective
Duden Dictionary
Feldspat
Feld spat Substantiv, maskulin , der |F e ldspat |der Feldspat; Genitiv: des Feldspat [e ]s, Plural: die Feldspate und Späte in vielen Formen vorkommendes farbloses oder helles gesteinsbildendes Mineral
The Wordsmith Dictionary