The voiced uvular implosive is an extremely rare type of consonantal sound. The voiced retroflex implosive is a type of consonantal sound. There is a series of palatal consonants, including both ejective and implosive. The voiced velar implosive is a type of consonantal sound, used in some spoken languages. A voiced bilabial implosive is a type of consonantal sound, used in some spoken languages. A contrastive retroflex implosive may, however, occur in Ngad'a, a language spoken in Flores, Indonesia. The voiced palatal implosive is a type of consonantal sound, used in some spoken languages. The voiced alveolar implosive is a type of consonantal sound, used in some spoken languages. An explosive or implosive mechanism produces an isotropic seismic source. Also, Xhosa has ejectives and an implosive. It includes phonemically distinctive implosive consonants, which are unusual among the Indo-European languages. The vast majority of implosive consonants are voiced, so the glottis is only partially closed. In addition, the rare voiceless implosive series has been dropped. The official orthography contains the following consonants&colon; &colon; some add for the implosive . They discover the train is smuggling implosive weapons of mass destruction (WMDs) inside children's toys.