| 1. | the possessive form of he (used as an attributive or predicative adjective): His coat is the brown one. This brown coat is his. Do you mind his speaking first? |
| 2. | that or those belonging to him: His was the cleverest remark of all. I borrowed a tie of his. |
| histidine. |
pronoun, nominative he, possessive his, objective him; plural nominative they, possessive their or theirs, objective them; noun, plural hes; adjective | 1. | the male person or animal being discussed or last mentioned; that male. |
| 2. | anyone (without reference to sex); that person: He who hesitates is lost. |
| 3. | any male person or animal; a man: hes and shes. |
| 4. | male (usually used in combination): a he-goat. |

his (hĭz) adj. The possessive form of he1. Used as a modifier before a noun: his boots; his plans. pron. (used with a sing. or pl. verb) Used to indicate the one or ones belonging to him: If you can't find your hat, take his. [Middle English, from Old English; see ko- in Indo-European roots.] |
| case | SINGULAR | - | - | PLURAL |
| - | masc. | neut. | fem. | (all genders) |
| nom. | he | hit | heo, hio | hie, hi |
| acc. | hine | hit | hie, hi | hie, hi |
| gen. | his | his | hire | hira, heora |
| dat. | him | him | hire | him, heom |
He
The symbol for the element helium.
His abbr.
histidine
His (hĭs), Wilhelm. 1863-1934.
German anatomist known for his investigations of the heart. He described (1893) the atrioventricular trunk, also called the His bundle.
histidine his·ti·dine (hĭs'tĭ-dēn', -dĭn)
n.
Abbr. His
An amino acid that is essential for tissue growth and repair.
| helium (hē'lē-əm) Pronunciation Key
Symbol He A very lightweight, colorless, odorless element in the noble gas group. Helium occurs in natural gas, in radioactive ores, and in small amounts in the atmosphere. It has the lowest boiling point of any substance and is the second most abundant element in the universe. Helium is used to provide lift for balloons and blimps and to create artificial air that will not react chemically. Atomic number 2; atomic weight 4.0026; boiling point -268.9°C; density at 0°C 0.1785 gram per liter. See Periodic Table. Our Living Language : The second most abundant element in the universe after hydrogen, Helium (symbol He) is a colorless, odorless, nonmetallic gas that is produced abundantly by the nuclear fusion in all stars and is found in smaller amounts on Earth. It was discovered by the British scientist—and founding editor of the journal Nature—Joseph Norman Lockyer in 1868, while he was studying a solar eclipse with a spectroscope, an instrument that breaks light up into a spectrum. If an element is heated up enough to glow, the emitted light produces a unique spectrum when refracted through a prism. Lockyer noticed that the spectrum of the Sun's corona, which is visible only during a solar eclipse, contained lines produced by an unknown element. He named the element helium from helios, the Greek word for "sun." Helios gives us many other words pertaining to the Sun, such as heliocentric and perihelion. |
| histidine (hĭs'tĭ-dēn') Pronunciation Key
An amino acid that is essential for children but not for adults. Chemical formula: C6H9N3O2. |
| HIS high resolution interferometer spectrometer |