| BILLIONTH | • billionth adj. The ordinal form of the number one billion. • billionth n. The person or thing in the billionth position. • billionth n. One of a billion equal parts of a whole. |
| CENTILLIONTH | • centillionth adj. The ordinal form of the number one centillion (10303 short scale, or 10600 long scale). • centillionth n. The person or thing in the centillionth position. • centillionth n. One of a centillion equal parts of a whole. |
| DECILLIONTH | • decillionth adj. The ordinal form of the number decillion. • decillionth n. The person or thing in the decillionth position. • decillionth n. One of a decillion equal parts of a whole. |
| GAZILLIONTH | • gazillionth adj. (Informal) The ordinal form of the number gazillion. • gazillionth n. (Informal) The person or thing in the gazillionth position. • gazillionth n. (Informal) One of a gazillion equal parts of a whole. |
| JILLIONTH | • jillionth adj. The ordinal form of the number jillion. • JILLIONTH adj. the ordinal of jillion. |
| MILLIONTH | • millionth adj. The ordinal form of the number one million. • millionth n. The person or thing in the millionth position. • millionth n. One of a million equal parts of a whole. Term ppm (parts per million) is also used. |
| NONILLIONTH | • nonillionth adj. The ordinal form of the number nonillion. • nonillionth n. The person or thing in the nonillionth position. • nonillionth n. One of a nonillion equal parts of a whole. |
| OCTILLIONTH | • octillionth adj. The ordinal form of the number octillion. • octillionth n. The person or thing in the octillionth position. • octillionth n. One of an octillion equal parts of a whole. |
| QUADRILLIONTH | • quadrillionth adj. The ordinal form of the number one quadrillion. • quadrillionth n. The person or thing in the quadrillionth position. • quadrillionth n. One of a quadrillion equal parts of a whole. |
| QUINTILLIONTH | • quintillionth adj. The ordinal form of the number one quintillion. • quintillionth n. The person or thing in the quintillionth position. • quintillionth n. One of a quintillion equal parts of a whole. |
| SEPTILLIONTH | • septillionth adj. The ordinal form of the number septillion. • septillionth n. The person or thing in the septillionth position. • septillionth n. One of a septillion equal parts of a whole. |
| SEXTILLIONTH | • sextillionth adj. The ordinal form of the number one sextillion. • sextillionth n. The person or thing in the sextillionth position. • sextillionth n. One of a sextillion equal parts of a whole. |
| TRILLIONTH | • trillionth adj. The ordinal form of the number one trillion. • trillionth n. The person or thing in the trillionth position. • trillionth n. One of a trillion equal parts of a whole. |
| ZILLIONTH | • zillionth adj. (Informal) The ordinal form of the number zillion. • zillionth n. (Informal) The person or thing in the zillionth position. • zillionth n. (Informal) One of a zillion equal parts of a whole. |