is |ɪz| — plural form of I (alternative spelling of I's).

Isabel |ˈɪzəˌbel| — A female given name used in English since the Middle Ages.

Isabella |ˌɪzəˈbelə| — the queen of Castile whose marriage to Ferdinand of Aragon in 1469 marked the beginning of the modern state of Spain; they instituted the Spanish Inquisition in 1478 and sponsored the voyages of Christopher Columbus in 1492 (1451-1504)

Isaiah |ˌaɪˈzeɪə| — (Old Testament) the first of the major Hebrew prophets (8th century BC)

ischaemic |ɪˈskiːmɪk| — relating to or affected by ischemia

ischemia |ˌɪˈskemɪə| — local anemia in a given body part sometimes resulting from vasoconstriction or thrombosis or embolism

ischemic  — relating to or affected by ischemia

isinglass |ˈaɪzɪŋɡlæs| — any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity

Islam |ˈɪzlɑːm| — the civilization of Muslims collectively which is governed by the Muslim religion

Islamic |ɪzˈlæmɪk| — of or relating to or supporting Islamism

Islamist |ˈɪzləmɪst| — a scholar who knowledgeable in Islamic studies

Islamite |ˈɪsləˌmaɪt| — A Muslim.

Islamization |ˌɪzlaməˈzeɪʃən| — The conversion of a society to Islam.

island |ˈaɪlənd| — a land mass (smaller than a continent) that is surrounded by water

islander |ˈaɪləndər| — an inhabitant of an island

isle |aɪl| — a small island

islet |ˈaɪlət| — a small island

ism |ˈɪzəm| — a belief (or system of beliefs) accepted as authoritative by some group or school

isobar |ˈaɪsəbɑːr| — (meteorology)an isogram connecting points having equal barometric pressure at a given time

isochronal |aɪˈsɑːkrənl| — equal in duration or interval

isochronous |aɪˈsɑːkrənəs| — equal in duration or interval

isoclinal |ˌaɪsəˈklaɪnl| — an isogram connecting points of equal magnetic inclination

isocline |ˈaɪsəklaɪn| — (geology) A tightly folded syncline or anticline in which the two sides are almost parallel

isolate |ˈaɪsəleɪt| — place or set apart

isolated |ˈaɪsəleɪtɪd| — not close together in time

isolating |ˈaɪsəleɪtɪŋ| — relating to or being a language in which each word typically expresses a distinct idea and part of speech and syntactical relations are determined almost exclusively by word order and particles

isolation |ˌaɪsəˈleɪʃn| — a state of separation between persons or groups

isolationism |ˌaɪsəˈleɪʃənɪzəm| — a policy of nonparticipation in international economic and political relations

isolationist |ˌaɪsəˈleɪʃənɪst| — an advocate of isolationism in international affairs

isolator |ˈaɪsəleɪtə| — an electrical device that detects short circuits and isolates them

isomer |ˈaɪsəmər| — a compound that exists in forms having different arrangements of atoms but the same molecular weight

isometric |ˌaɪsəˈmetrɪk| — a line connecting isometric points

isosceles |aɪˈsɒsəˌlɪz| — (of a triangle) having two sides of equal length

isotherm |ˈaɪsəθɜːrm| — (meteorology) an isogram connecting points having the same temperature at a given time

isothermal |ˌaɪsəˈθɜːməl| — of a process or change taking place at constant temperature

isothermic  — of or relating to an isotherm

isotope |ˈaɪsətəʊp| — one of two or more atoms with the same atomic number but with different numbers of neutrons

Israel |ˈɪzreɪl| — Jewish republic in southwestern Asia at eastern end of Mediterranean; formerly part of Palestine

Israeli |ɪzˈreɪlɪ| — a native or inhabitant of Israel

Israelite |ˈɪzrəlaɪt| — a native or inhabitant of the ancient kingdom of Israel

issuance |ˈɪʃuːəns| — the act of providing an item for general use or for official purposes (usually in quantity)

issue |ˈɪʃuː| — an important question that is in dispute and must be settled

issuer |ˈɪʃuːər| — an institution that issues something (securities or publications or currency etc.)

issuing |ˈɪʃuːɪŋ| — the act of providing an item for general use or for official purposes (usually in quantity)

isthmus |ˈɪsməs| — a relatively narrow strip of land (with water on both sides) connecting two larger land areas